diff --git a/stdlib/_socket.pyi b/stdlib/_socket.pyi
index 41fdce87ec14..ba47d990106e 100644
--- a/stdlib/_socket.pyi
+++ b/stdlib/_socket.pyi
@@ -2,7 +2,7 @@ import sys
 from _typeshed import ReadableBuffer, WriteableBuffer
 from collections.abc import Iterable
 from socket import error as error, gaierror as gaierror, herror as herror, timeout as timeout
-from typing import Any, SupportsIndex, overload
+from typing import Any, Final, SupportsIndex, overload
 from typing_extensions import CapsuleType, TypeAlias
 
 _CMSG: TypeAlias = tuple[int, int, bytes]
@@ -19,23 +19,23 @@ _RetAddress: TypeAlias = Any
 # https://docs.python.org/3/library/socket.html#constants
 
 if sys.platform != "win32":
-    AF_UNIX: int
+    AF_UNIX: Final[int]
 
-AF_INET: int
-AF_INET6: int
+AF_INET: Final[int]
+AF_INET6: Final[int]
 
-AF_UNSPEC: int
+AF_UNSPEC: Final[int]
 
-SOCK_STREAM: int
-SOCK_DGRAM: int
-SOCK_RAW: int
-SOCK_RDM: int
-SOCK_SEQPACKET: int
+SOCK_STREAM: Final[int]
+SOCK_DGRAM: Final[int]
+SOCK_RAW: Final[int]
+SOCK_RDM: Final[int]
+SOCK_SEQPACKET: Final[int]
 
 if sys.platform == "linux":
     # Availability: Linux >= 2.6.27
-    SOCK_CLOEXEC: int
-    SOCK_NONBLOCK: int
+    SOCK_CLOEXEC: Final[int]
+    SOCK_NONBLOCK: Final[int]
 
 # --------------------
 # Many constants of these forms, documented in the Unix documentation on
@@ -56,329 +56,329 @@ if sys.platform == "linux":
 # TCP_*
 # --------------------
 
-SO_ACCEPTCONN: int
-SO_BROADCAST: int
-SO_DEBUG: int
-SO_DONTROUTE: int
-SO_ERROR: int
-SO_KEEPALIVE: int
-SO_LINGER: int
-SO_OOBINLINE: int
-SO_RCVBUF: int
-SO_RCVLOWAT: int
-SO_RCVTIMEO: int
-SO_REUSEADDR: int
-SO_SNDBUF: int
-SO_SNDLOWAT: int
-SO_SNDTIMEO: int
-SO_TYPE: int
+SO_ACCEPTCONN: Final[int]
+SO_BROADCAST: Final[int]
+SO_DEBUG: Final[int]
+SO_DONTROUTE: Final[int]
+SO_ERROR: Final[int]
+SO_KEEPALIVE: Final[int]
+SO_LINGER: Final[int]
+SO_OOBINLINE: Final[int]
+SO_RCVBUF: Final[int]
+SO_RCVLOWAT: Final[int]
+SO_RCVTIMEO: Final[int]
+SO_REUSEADDR: Final[int]
+SO_SNDBUF: Final[int]
+SO_SNDLOWAT: Final[int]
+SO_SNDTIMEO: Final[int]
+SO_TYPE: Final[int]
 if sys.platform != "linux":
-    SO_USELOOPBACK: int
+    SO_USELOOPBACK: Final[int]
 if sys.platform == "win32":
-    SO_EXCLUSIVEADDRUSE: int
+    SO_EXCLUSIVEADDRUSE: Final[int]
 if sys.platform != "win32":
-    SO_REUSEPORT: int
+    SO_REUSEPORT: Final[int]
     if sys.platform != "darwin" or sys.version_info >= (3, 13):
-        SO_BINDTODEVICE: int
+        SO_BINDTODEVICE: Final[int]
 
 if sys.platform != "win32" and sys.platform != "darwin":
-    SO_DOMAIN: int
-    SO_MARK: int
-    SO_PASSCRED: int
-    SO_PASSSEC: int
-    SO_PEERCRED: int
-    SO_PEERSEC: int
-    SO_PRIORITY: int
-    SO_PROTOCOL: int
+    SO_DOMAIN: Final[int]
+    SO_MARK: Final[int]
+    SO_PASSCRED: Final[int]
+    SO_PASSSEC: Final[int]
+    SO_PEERCRED: Final[int]
+    SO_PEERSEC: Final[int]
+    SO_PRIORITY: Final[int]
+    SO_PROTOCOL: Final[int]
 if sys.platform != "win32" and sys.platform != "darwin" and sys.platform != "linux":
-    SO_SETFIB: int
+    SO_SETFIB: Final[int]
 if sys.platform == "linux" and sys.version_info >= (3, 13):
-    SO_BINDTOIFINDEX: int
+    SO_BINDTOIFINDEX: Final[int]
 
-SOMAXCONN: int
+SOMAXCONN: Final[int]
 
-MSG_CTRUNC: int
-MSG_DONTROUTE: int
-MSG_OOB: int
-MSG_PEEK: int
-MSG_TRUNC: int
-MSG_WAITALL: int
+MSG_CTRUNC: Final[int]
+MSG_DONTROUTE: Final[int]
+MSG_OOB: Final[int]
+MSG_PEEK: Final[int]
+MSG_TRUNC: Final[int]
+MSG_WAITALL: Final[int]
 if sys.platform != "win32":
-    MSG_DONTWAIT: int
-    MSG_EOR: int
-    MSG_NOSIGNAL: int  # Sometimes this exists on darwin, sometimes not
+    MSG_DONTWAIT: Final[int]
+    MSG_EOR: Final[int]
+    MSG_NOSIGNAL: Final[int]  # Sometimes this exists on darwin, sometimes not
 if sys.platform != "darwin":
-    MSG_ERRQUEUE: int
+    MSG_ERRQUEUE: Final[int]
 if sys.platform == "win32":
-    MSG_BCAST: int
-    MSG_MCAST: int
+    MSG_BCAST: Final[int]
+    MSG_MCAST: Final[int]
 if sys.platform != "win32" and sys.platform != "darwin":
-    MSG_CMSG_CLOEXEC: int
-    MSG_CONFIRM: int
-    MSG_FASTOPEN: int
-    MSG_MORE: int
+    MSG_CMSG_CLOEXEC: Final[int]
+    MSG_CONFIRM: Final[int]
+    MSG_FASTOPEN: Final[int]
+    MSG_MORE: Final[int]
 if sys.platform != "win32" and sys.platform != "linux":
-    MSG_EOF: int
+    MSG_EOF: Final[int]
 if sys.platform != "win32" and sys.platform != "linux" and sys.platform != "darwin":
-    MSG_NOTIFICATION: int
-    MSG_BTAG: int  # Not FreeBSD either
-    MSG_ETAG: int  # Not FreeBSD either
-
-SOL_IP: int
-SOL_SOCKET: int
-SOL_TCP: int
-SOL_UDP: int
+    MSG_NOTIFICATION: Final[int]
+    MSG_BTAG: Final[int]  # Not FreeBSD either
+    MSG_ETAG: Final[int]  # Not FreeBSD either
+
+SOL_IP: Final[int]
+SOL_SOCKET: Final[int]
+SOL_TCP: Final[int]
+SOL_UDP: Final[int]
 if sys.platform != "win32" and sys.platform != "darwin":
     # Defined in socket.h for Linux, but these aren't always present for
     # some reason.
-    SOL_ATALK: int
-    SOL_AX25: int
-    SOL_HCI: int
-    SOL_IPX: int
-    SOL_NETROM: int
-    SOL_ROSE: int
+    SOL_ATALK: Final[int]
+    SOL_AX25: Final[int]
+    SOL_HCI: Final[int]
+    SOL_IPX: Final[int]
+    SOL_NETROM: Final[int]
+    SOL_ROSE: Final[int]
 
 if sys.platform != "win32":
-    SCM_RIGHTS: int
+    SCM_RIGHTS: Final[int]
 if sys.platform != "win32" and sys.platform != "darwin":
-    SCM_CREDENTIALS: int
+    SCM_CREDENTIALS: Final[int]
 if sys.platform != "win32" and sys.platform != "linux":
-    SCM_CREDS: int
-
-IPPROTO_ICMP: int
-IPPROTO_IP: int
-IPPROTO_RAW: int
-IPPROTO_TCP: int
-IPPROTO_UDP: int
-IPPROTO_AH: int
-IPPROTO_DSTOPTS: int
-IPPROTO_EGP: int
-IPPROTO_ESP: int
-IPPROTO_FRAGMENT: int
-IPPROTO_HOPOPTS: int
-IPPROTO_ICMPV6: int
-IPPROTO_IDP: int
-IPPROTO_IGMP: int
-IPPROTO_IPV6: int
-IPPROTO_NONE: int
-IPPROTO_PIM: int
-IPPROTO_PUP: int
-IPPROTO_ROUTING: int
-IPPROTO_SCTP: int
+    SCM_CREDS: Final[int]
+
+IPPROTO_ICMP: Final[int]
+IPPROTO_IP: Final[int]
+IPPROTO_RAW: Final[int]
+IPPROTO_TCP: Final[int]
+IPPROTO_UDP: Final[int]
+IPPROTO_AH: Final[int]
+IPPROTO_DSTOPTS: Final[int]
+IPPROTO_EGP: Final[int]
+IPPROTO_ESP: Final[int]
+IPPROTO_FRAGMENT: Final[int]
+IPPROTO_HOPOPTS: Final[int]
+IPPROTO_ICMPV6: Final[int]
+IPPROTO_IDP: Final[int]
+IPPROTO_IGMP: Final[int]
+IPPROTO_IPV6: Final[int]
+IPPROTO_NONE: Final[int]
+IPPROTO_PIM: Final[int]
+IPPROTO_PUP: Final[int]
+IPPROTO_ROUTING: Final[int]
+IPPROTO_SCTP: Final[int]
 if sys.platform != "linux":
-    IPPROTO_GGP: int
-    IPPROTO_IPV4: int
-    IPPROTO_MAX: int
-    IPPROTO_ND: int
+    IPPROTO_GGP: Final[int]
+    IPPROTO_IPV4: Final[int]
+    IPPROTO_MAX: Final[int]
+    IPPROTO_ND: Final[int]
 if sys.platform == "win32":
-    IPPROTO_CBT: int
-    IPPROTO_ICLFXBM: int
-    IPPROTO_IGP: int
-    IPPROTO_L2TP: int
-    IPPROTO_PGM: int
-    IPPROTO_RDP: int
-    IPPROTO_ST: int
+    IPPROTO_CBT: Final[int]
+    IPPROTO_ICLFXBM: Final[int]
+    IPPROTO_IGP: Final[int]
+    IPPROTO_L2TP: Final[int]
+    IPPROTO_PGM: Final[int]
+    IPPROTO_RDP: Final[int]
+    IPPROTO_ST: Final[int]
 if sys.platform != "win32":
-    IPPROTO_GRE: int
-    IPPROTO_IPIP: int
-    IPPROTO_RSVP: int
-    IPPROTO_TP: int
+    IPPROTO_GRE: Final[int]
+    IPPROTO_IPIP: Final[int]
+    IPPROTO_RSVP: Final[int]
+    IPPROTO_TP: Final[int]
 if sys.platform != "win32" and sys.platform != "linux":
-    IPPROTO_EON: int
-    IPPROTO_HELLO: int
-    IPPROTO_IPCOMP: int
-    IPPROTO_XTP: int
+    IPPROTO_EON: Final[int]
+    IPPROTO_HELLO: Final[int]
+    IPPROTO_IPCOMP: Final[int]
+    IPPROTO_XTP: Final[int]
 if sys.platform != "win32" and sys.platform != "darwin" and sys.platform != "linux":
-    IPPROTO_BIP: int  # Not FreeBSD either
-    IPPROTO_MOBILE: int  # Not FreeBSD either
-    IPPROTO_VRRP: int  # Not FreeBSD either
+    IPPROTO_BIP: Final[int]  # Not FreeBSD either
+    IPPROTO_MOBILE: Final[int]  # Not FreeBSD either
+    IPPROTO_VRRP: Final[int]  # Not FreeBSD either
 if sys.platform == "linux":
     # Availability: Linux >= 2.6.20, FreeBSD >= 10.1
-    IPPROTO_UDPLITE: int
+    IPPROTO_UDPLITE: Final[int]
 if sys.version_info >= (3, 10) and sys.platform == "linux":
-    IPPROTO_MPTCP: int
-
-IPPORT_RESERVED: int
-IPPORT_USERRESERVED: int
-
-INADDR_ALLHOSTS_GROUP: int
-INADDR_ANY: int
-INADDR_BROADCAST: int
-INADDR_LOOPBACK: int
-INADDR_MAX_LOCAL_GROUP: int
-INADDR_NONE: int
-INADDR_UNSPEC_GROUP: int
-
-IP_ADD_MEMBERSHIP: int
-IP_DROP_MEMBERSHIP: int
-IP_HDRINCL: int
-IP_MULTICAST_IF: int
-IP_MULTICAST_LOOP: int
-IP_MULTICAST_TTL: int
-IP_OPTIONS: int
+    IPPROTO_MPTCP: Final[int]
+
+IPPORT_RESERVED: Final[int]
+IPPORT_USERRESERVED: Final[int]
+
+INADDR_ALLHOSTS_GROUP: Final[int]
+INADDR_ANY: Final[int]
+INADDR_BROADCAST: Final[int]
+INADDR_LOOPBACK: Final[int]
+INADDR_MAX_LOCAL_GROUP: Final[int]
+INADDR_NONE: Final[int]
+INADDR_UNSPEC_GROUP: Final[int]
+
+IP_ADD_MEMBERSHIP: Final[int]
+IP_DROP_MEMBERSHIP: Final[int]
+IP_HDRINCL: Final[int]
+IP_MULTICAST_IF: Final[int]
+IP_MULTICAST_LOOP: Final[int]
+IP_MULTICAST_TTL: Final[int]
+IP_OPTIONS: Final[int]
 if sys.platform != "linux":
-    IP_RECVDSTADDR: int
+    IP_RECVDSTADDR: Final[int]
 if sys.version_info >= (3, 10):
-    IP_RECVTOS: int
-IP_TOS: int
-IP_TTL: int
+    IP_RECVTOS: Final[int]
+IP_TOS: Final[int]
+IP_TTL: Final[int]
 if sys.platform != "win32":
-    IP_DEFAULT_MULTICAST_LOOP: int
-    IP_DEFAULT_MULTICAST_TTL: int
-    IP_MAX_MEMBERSHIPS: int
-    IP_RECVOPTS: int
-    IP_RECVRETOPTS: int
-    IP_RETOPTS: int
+    IP_DEFAULT_MULTICAST_LOOP: Final[int]
+    IP_DEFAULT_MULTICAST_TTL: Final[int]
+    IP_MAX_MEMBERSHIPS: Final[int]
+    IP_RECVOPTS: Final[int]
+    IP_RECVRETOPTS: Final[int]
+    IP_RETOPTS: Final[int]
 if sys.version_info >= (3, 13) and sys.platform == "linux":
-    CAN_RAW_ERR_FILTER: int
+    CAN_RAW_ERR_FILTER: Final[int]
 if sys.version_info >= (3, 14):
-    IP_RECVTTL: int
+    IP_RECVTTL: Final[int]
 
     if sys.platform == "win32" or sys.platform == "linux":
-        IPV6_RECVERR: int
-        IP_RECVERR: int
-        SO_ORIGINAL_DST: int
+        IPV6_RECVERR: Final[int]
+        IP_RECVERR: Final[int]
+        SO_ORIGINAL_DST: Final[int]
 
     if sys.platform == "win32":
-        SOL_RFCOMM: int
-        SO_BTH_ENCRYPT: int
-        SO_BTH_MTU: int
-        SO_BTH_MTU_MAX: int
-        SO_BTH_MTU_MIN: int
-        TCP_QUICKACK: int
+        SOL_RFCOMM: Final[int]
+        SO_BTH_ENCRYPT: Final[int]
+        SO_BTH_MTU: Final[int]
+        SO_BTH_MTU_MAX: Final[int]
+        SO_BTH_MTU_MIN: Final[int]
+        TCP_QUICKACK: Final[int]
 
     if sys.platform == "linux":
-        IP_FREEBIND: int
-        IP_RECVORIGDSTADDR: int
-        VMADDR_CID_LOCAL: int
+        IP_FREEBIND: Final[int]
+        IP_RECVORIGDSTADDR: Final[int]
+        VMADDR_CID_LOCAL: Final[int]
 
 if sys.platform != "win32" and sys.platform != "darwin":
-    IP_TRANSPARENT: int
+    IP_TRANSPARENT: Final[int]
 if sys.platform != "win32" and sys.platform != "darwin" and sys.version_info >= (3, 11):
-    IP_BIND_ADDRESS_NO_PORT: int
+    IP_BIND_ADDRESS_NO_PORT: Final[int]
 if sys.version_info >= (3, 12):
-    IP_ADD_SOURCE_MEMBERSHIP: int
-    IP_BLOCK_SOURCE: int
-    IP_DROP_SOURCE_MEMBERSHIP: int
-    IP_PKTINFO: int
-    IP_UNBLOCK_SOURCE: int
-
-IPV6_CHECKSUM: int
-IPV6_JOIN_GROUP: int
-IPV6_LEAVE_GROUP: int
-IPV6_MULTICAST_HOPS: int
-IPV6_MULTICAST_IF: int
-IPV6_MULTICAST_LOOP: int
-IPV6_RECVTCLASS: int
-IPV6_TCLASS: int
-IPV6_UNICAST_HOPS: int
-IPV6_V6ONLY: int
-IPV6_DONTFRAG: int
-IPV6_HOPLIMIT: int
-IPV6_HOPOPTS: int
-IPV6_PKTINFO: int
-IPV6_RECVRTHDR: int
-IPV6_RTHDR: int
+    IP_ADD_SOURCE_MEMBERSHIP: Final[int]
+    IP_BLOCK_SOURCE: Final[int]
+    IP_DROP_SOURCE_MEMBERSHIP: Final[int]
+    IP_PKTINFO: Final[int]
+    IP_UNBLOCK_SOURCE: Final[int]
+
+IPV6_CHECKSUM: Final[int]
+IPV6_JOIN_GROUP: Final[int]
+IPV6_LEAVE_GROUP: Final[int]
+IPV6_MULTICAST_HOPS: Final[int]
+IPV6_MULTICAST_IF: Final[int]
+IPV6_MULTICAST_LOOP: Final[int]
+IPV6_RECVTCLASS: Final[int]
+IPV6_TCLASS: Final[int]
+IPV6_UNICAST_HOPS: Final[int]
+IPV6_V6ONLY: Final[int]
+IPV6_DONTFRAG: Final[int]
+IPV6_HOPLIMIT: Final[int]
+IPV6_HOPOPTS: Final[int]
+IPV6_PKTINFO: Final[int]
+IPV6_RECVRTHDR: Final[int]
+IPV6_RTHDR: Final[int]
 if sys.platform != "win32":
-    IPV6_RTHDR_TYPE_0: int
-    IPV6_DSTOPTS: int
-    IPV6_NEXTHOP: int
-    IPV6_PATHMTU: int
-    IPV6_RECVDSTOPTS: int
-    IPV6_RECVHOPLIMIT: int
-    IPV6_RECVHOPOPTS: int
-    IPV6_RECVPATHMTU: int
-    IPV6_RECVPKTINFO: int
-    IPV6_RTHDRDSTOPTS: int
+    IPV6_RTHDR_TYPE_0: Final[int]
+    IPV6_DSTOPTS: Final[int]
+    IPV6_NEXTHOP: Final[int]
+    IPV6_PATHMTU: Final[int]
+    IPV6_RECVDSTOPTS: Final[int]
+    IPV6_RECVHOPLIMIT: Final[int]
+    IPV6_RECVHOPOPTS: Final[int]
+    IPV6_RECVPATHMTU: Final[int]
+    IPV6_RECVPKTINFO: Final[int]
+    IPV6_RTHDRDSTOPTS: Final[int]
 
 if sys.platform != "win32" and sys.platform != "linux":
-    IPV6_USE_MIN_MTU: int
-
-EAI_AGAIN: int
-EAI_BADFLAGS: int
-EAI_FAIL: int
-EAI_FAMILY: int
-EAI_MEMORY: int
-EAI_NODATA: int
-EAI_NONAME: int
-EAI_SERVICE: int
-EAI_SOCKTYPE: int
+    IPV6_USE_MIN_MTU: Final[int]
+
+EAI_AGAIN: Final[int]
+EAI_BADFLAGS: Final[int]
+EAI_FAIL: Final[int]
+EAI_FAMILY: Final[int]
+EAI_MEMORY: Final[int]
+EAI_NODATA: Final[int]
+EAI_NONAME: Final[int]
+EAI_SERVICE: Final[int]
+EAI_SOCKTYPE: Final[int]
 if sys.platform != "win32":
-    EAI_ADDRFAMILY: int
-    EAI_OVERFLOW: int
-    EAI_SYSTEM: int
+    EAI_ADDRFAMILY: Final[int]
+    EAI_OVERFLOW: Final[int]
+    EAI_SYSTEM: Final[int]
 if sys.platform != "win32" and sys.platform != "linux":
-    EAI_BADHINTS: int
-    EAI_MAX: int
-    EAI_PROTOCOL: int
-
-AI_ADDRCONFIG: int
-AI_ALL: int
-AI_CANONNAME: int
-AI_NUMERICHOST: int
-AI_NUMERICSERV: int
-AI_PASSIVE: int
-AI_V4MAPPED: int
+    EAI_BADHINTS: Final[int]
+    EAI_MAX: Final[int]
+    EAI_PROTOCOL: Final[int]
+
+AI_ADDRCONFIG: Final[int]
+AI_ALL: Final[int]
+AI_CANONNAME: Final[int]
+AI_NUMERICHOST: Final[int]
+AI_NUMERICSERV: Final[int]
+AI_PASSIVE: Final[int]
+AI_V4MAPPED: Final[int]
 if sys.platform != "win32" and sys.platform != "linux":
-    AI_DEFAULT: int
-    AI_MASK: int
-    AI_V4MAPPED_CFG: int
-
-NI_DGRAM: int
-NI_MAXHOST: int
-NI_MAXSERV: int
-NI_NAMEREQD: int
-NI_NOFQDN: int
-NI_NUMERICHOST: int
-NI_NUMERICSERV: int
+    AI_DEFAULT: Final[int]
+    AI_MASK: Final[int]
+    AI_V4MAPPED_CFG: Final[int]
+
+NI_DGRAM: Final[int]
+NI_MAXHOST: Final[int]
+NI_MAXSERV: Final[int]
+NI_NAMEREQD: Final[int]
+NI_NOFQDN: Final[int]
+NI_NUMERICHOST: Final[int]
+NI_NUMERICSERV: Final[int]
 if sys.platform == "linux" and sys.version_info >= (3, 13):
-    NI_IDN: int
+    NI_IDN: Final[int]
 
-TCP_FASTOPEN: int
-TCP_KEEPCNT: int
-TCP_KEEPINTVL: int
-TCP_MAXSEG: int
-TCP_NODELAY: int
+TCP_FASTOPEN: Final[int]
+TCP_KEEPCNT: Final[int]
+TCP_KEEPINTVL: Final[int]
+TCP_MAXSEG: Final[int]
+TCP_NODELAY: Final[int]
 if sys.platform != "win32":
-    TCP_NOTSENT_LOWAT: int
+    TCP_NOTSENT_LOWAT: Final[int]
 if sys.platform != "darwin":
-    TCP_KEEPIDLE: int
+    TCP_KEEPIDLE: Final[int]
 if sys.version_info >= (3, 10) and sys.platform == "darwin":
-    TCP_KEEPALIVE: int
+    TCP_KEEPALIVE: Final[int]
 if sys.version_info >= (3, 11) and sys.platform == "darwin":
-    TCP_CONNECTION_INFO: int
+    TCP_CONNECTION_INFO: Final[int]
 
 if sys.platform != "win32" and sys.platform != "darwin":
-    TCP_CONGESTION: int
-    TCP_CORK: int
-    TCP_DEFER_ACCEPT: int
-    TCP_INFO: int
-    TCP_LINGER2: int
-    TCP_QUICKACK: int
-    TCP_SYNCNT: int
-    TCP_USER_TIMEOUT: int
-    TCP_WINDOW_CLAMP: int
+    TCP_CONGESTION: Final[int]
+    TCP_CORK: Final[int]
+    TCP_DEFER_ACCEPT: Final[int]
+    TCP_INFO: Final[int]
+    TCP_LINGER2: Final[int]
+    TCP_QUICKACK: Final[int]
+    TCP_SYNCNT: Final[int]
+    TCP_USER_TIMEOUT: Final[int]
+    TCP_WINDOW_CLAMP: Final[int]
 if sys.platform == "linux" and sys.version_info >= (3, 12):
-    TCP_CC_INFO: int
-    TCP_FASTOPEN_CONNECT: int
-    TCP_FASTOPEN_KEY: int
-    TCP_FASTOPEN_NO_COOKIE: int
-    TCP_INQ: int
-    TCP_MD5SIG: int
-    TCP_MD5SIG_EXT: int
-    TCP_QUEUE_SEQ: int
-    TCP_REPAIR: int
-    TCP_REPAIR_OPTIONS: int
-    TCP_REPAIR_QUEUE: int
-    TCP_REPAIR_WINDOW: int
-    TCP_SAVED_SYN: int
-    TCP_SAVE_SYN: int
-    TCP_THIN_DUPACK: int
-    TCP_THIN_LINEAR_TIMEOUTS: int
-    TCP_TIMESTAMP: int
-    TCP_TX_DELAY: int
-    TCP_ULP: int
-    TCP_ZEROCOPY_RECEIVE: int
+    TCP_CC_INFO: Final[int]
+    TCP_FASTOPEN_CONNECT: Final[int]
+    TCP_FASTOPEN_KEY: Final[int]
+    TCP_FASTOPEN_NO_COOKIE: Final[int]
+    TCP_INQ: Final[int]
+    TCP_MD5SIG: Final[int]
+    TCP_MD5SIG_EXT: Final[int]
+    TCP_QUEUE_SEQ: Final[int]
+    TCP_REPAIR: Final[int]
+    TCP_REPAIR_OPTIONS: Final[int]
+    TCP_REPAIR_QUEUE: Final[int]
+    TCP_REPAIR_WINDOW: Final[int]
+    TCP_SAVED_SYN: Final[int]
+    TCP_SAVE_SYN: Final[int]
+    TCP_THIN_DUPACK: Final[int]
+    TCP_THIN_LINEAR_TIMEOUTS: Final[int]
+    TCP_TIMESTAMP: Final[int]
+    TCP_TX_DELAY: Final[int]
+    TCP_ULP: Final[int]
+    TCP_ZEROCOPY_RECEIVE: Final[int]
 
 # --------------------
 # Specifically documented constants
@@ -386,250 +386,250 @@ if sys.platform == "linux" and sys.version_info >= (3, 12):
 
 if sys.platform == "linux":
     # Availability: Linux >= 2.6.25, NetBSD >= 8
-    AF_CAN: int
-    PF_CAN: int
-    SOL_CAN_BASE: int
-    SOL_CAN_RAW: int
-    CAN_EFF_FLAG: int
-    CAN_EFF_MASK: int
-    CAN_ERR_FLAG: int
-    CAN_ERR_MASK: int
-    CAN_RAW: int
-    CAN_RAW_FILTER: int
-    CAN_RAW_LOOPBACK: int
-    CAN_RAW_RECV_OWN_MSGS: int
-    CAN_RTR_FLAG: int
-    CAN_SFF_MASK: int
+    AF_CAN: Final[int]
+    PF_CAN: Final[int]
+    SOL_CAN_BASE: Final[int]
+    SOL_CAN_RAW: Final[int]
+    CAN_EFF_FLAG: Final[int]
+    CAN_EFF_MASK: Final[int]
+    CAN_ERR_FLAG: Final[int]
+    CAN_ERR_MASK: Final[int]
+    CAN_RAW: Final[int]
+    CAN_RAW_FILTER: Final[int]
+    CAN_RAW_LOOPBACK: Final[int]
+    CAN_RAW_RECV_OWN_MSGS: Final[int]
+    CAN_RTR_FLAG: Final[int]
+    CAN_SFF_MASK: Final[int]
     if sys.version_info < (3, 11):
-        CAN_RAW_ERR_FILTER: int
+        CAN_RAW_ERR_FILTER: Final[int]
 
 if sys.platform == "linux":
     # Availability: Linux >= 2.6.25
-    CAN_BCM: int
-    CAN_BCM_TX_SETUP: int
-    CAN_BCM_TX_DELETE: int
-    CAN_BCM_TX_READ: int
-    CAN_BCM_TX_SEND: int
-    CAN_BCM_RX_SETUP: int
-    CAN_BCM_RX_DELETE: int
-    CAN_BCM_RX_READ: int
-    CAN_BCM_TX_STATUS: int
-    CAN_BCM_TX_EXPIRED: int
-    CAN_BCM_RX_STATUS: int
-    CAN_BCM_RX_TIMEOUT: int
-    CAN_BCM_RX_CHANGED: int
-    CAN_BCM_SETTIMER: int
-    CAN_BCM_STARTTIMER: int
-    CAN_BCM_TX_COUNTEVT: int
-    CAN_BCM_TX_ANNOUNCE: int
-    CAN_BCM_TX_CP_CAN_ID: int
-    CAN_BCM_RX_FILTER_ID: int
-    CAN_BCM_RX_CHECK_DLC: int
-    CAN_BCM_RX_NO_AUTOTIMER: int
-    CAN_BCM_RX_ANNOUNCE_RESUME: int
-    CAN_BCM_TX_RESET_MULTI_IDX: int
-    CAN_BCM_RX_RTR_FRAME: int
-    CAN_BCM_CAN_FD_FRAME: int
+    CAN_BCM: Final[int]
+    CAN_BCM_TX_SETUP: Final[int]
+    CAN_BCM_TX_DELETE: Final[int]
+    CAN_BCM_TX_READ: Final[int]
+    CAN_BCM_TX_SEND: Final[int]
+    CAN_BCM_RX_SETUP: Final[int]
+    CAN_BCM_RX_DELETE: Final[int]
+    CAN_BCM_RX_READ: Final[int]
+    CAN_BCM_TX_STATUS: Final[int]
+    CAN_BCM_TX_EXPIRED: Final[int]
+    CAN_BCM_RX_STATUS: Final[int]
+    CAN_BCM_RX_TIMEOUT: Final[int]
+    CAN_BCM_RX_CHANGED: Final[int]
+    CAN_BCM_SETTIMER: Final[int]
+    CAN_BCM_STARTTIMER: Final[int]
+    CAN_BCM_TX_COUNTEVT: Final[int]
+    CAN_BCM_TX_ANNOUNCE: Final[int]
+    CAN_BCM_TX_CP_CAN_ID: Final[int]
+    CAN_BCM_RX_FILTER_ID: Final[int]
+    CAN_BCM_RX_CHECK_DLC: Final[int]
+    CAN_BCM_RX_NO_AUTOTIMER: Final[int]
+    CAN_BCM_RX_ANNOUNCE_RESUME: Final[int]
+    CAN_BCM_TX_RESET_MULTI_IDX: Final[int]
+    CAN_BCM_RX_RTR_FRAME: Final[int]
+    CAN_BCM_CAN_FD_FRAME: Final[int]
 
 if sys.platform == "linux":
     # Availability: Linux >= 3.6
-    CAN_RAW_FD_FRAMES: int
+    CAN_RAW_FD_FRAMES: Final[int]
     # Availability: Linux >= 4.1
-    CAN_RAW_JOIN_FILTERS: int
+    CAN_RAW_JOIN_FILTERS: Final[int]
     # Availability: Linux >= 2.6.25
-    CAN_ISOTP: int
+    CAN_ISOTP: Final[int]
     # Availability: Linux >= 5.4
-    CAN_J1939: int
-
-    J1939_MAX_UNICAST_ADDR: int
-    J1939_IDLE_ADDR: int
-    J1939_NO_ADDR: int
-    J1939_NO_NAME: int
-    J1939_PGN_REQUEST: int
-    J1939_PGN_ADDRESS_CLAIMED: int
-    J1939_PGN_ADDRESS_COMMANDED: int
-    J1939_PGN_PDU1_MAX: int
-    J1939_PGN_MAX: int
-    J1939_NO_PGN: int
-
-    SO_J1939_FILTER: int
-    SO_J1939_PROMISC: int
-    SO_J1939_SEND_PRIO: int
-    SO_J1939_ERRQUEUE: int
-
-    SCM_J1939_DEST_ADDR: int
-    SCM_J1939_DEST_NAME: int
-    SCM_J1939_PRIO: int
-    SCM_J1939_ERRQUEUE: int
-
-    J1939_NLA_PAD: int
-    J1939_NLA_BYTES_ACKED: int
-    J1939_EE_INFO_NONE: int
-    J1939_EE_INFO_TX_ABORT: int
-    J1939_FILTER_MAX: int
+    CAN_J1939: Final[int]
+
+    J1939_MAX_UNICAST_ADDR: Final[int]
+    J1939_IDLE_ADDR: Final[int]
+    J1939_NO_ADDR: Final[int]
+    J1939_NO_NAME: Final[int]
+    J1939_PGN_REQUEST: Final[int]
+    J1939_PGN_ADDRESS_CLAIMED: Final[int]
+    J1939_PGN_ADDRESS_COMMANDED: Final[int]
+    J1939_PGN_PDU1_MAX: Final[int]
+    J1939_PGN_MAX: Final[int]
+    J1939_NO_PGN: Final[int]
+
+    SO_J1939_FILTER: Final[int]
+    SO_J1939_PROMISC: Final[int]
+    SO_J1939_SEND_PRIO: Final[int]
+    SO_J1939_ERRQUEUE: Final[int]
+
+    SCM_J1939_DEST_ADDR: Final[int]
+    SCM_J1939_DEST_NAME: Final[int]
+    SCM_J1939_PRIO: Final[int]
+    SCM_J1939_ERRQUEUE: Final[int]
+
+    J1939_NLA_PAD: Final[int]
+    J1939_NLA_BYTES_ACKED: Final[int]
+    J1939_EE_INFO_NONE: Final[int]
+    J1939_EE_INFO_TX_ABORT: Final[int]
+    J1939_FILTER_MAX: Final[int]
 
 if sys.version_info >= (3, 12) and sys.platform != "linux" and sys.platform != "win32" and sys.platform != "darwin":
     # Availability: FreeBSD >= 14.0
-    AF_DIVERT: int
-    PF_DIVERT: int
+    AF_DIVERT: Final[int]
+    PF_DIVERT: Final[int]
 
 if sys.platform == "linux":
     # Availability: Linux >= 2.2
-    AF_PACKET: int
-    PF_PACKET: int
-    PACKET_BROADCAST: int
-    PACKET_FASTROUTE: int
-    PACKET_HOST: int
-    PACKET_LOOPBACK: int
-    PACKET_MULTICAST: int
-    PACKET_OTHERHOST: int
-    PACKET_OUTGOING: int
+    AF_PACKET: Final[int]
+    PF_PACKET: Final[int]
+    PACKET_BROADCAST: Final[int]
+    PACKET_FASTROUTE: Final[int]
+    PACKET_HOST: Final[int]
+    PACKET_LOOPBACK: Final[int]
+    PACKET_MULTICAST: Final[int]
+    PACKET_OTHERHOST: Final[int]
+    PACKET_OUTGOING: Final[int]
 
 if sys.version_info >= (3, 12) and sys.platform == "linux":
-    ETH_P_ALL: int
+    ETH_P_ALL: Final[int]
 
 if sys.platform == "linux":
     # Availability: Linux >= 2.6.30
-    AF_RDS: int
-    PF_RDS: int
-    SOL_RDS: int
+    AF_RDS: Final[int]
+    PF_RDS: Final[int]
+    SOL_RDS: Final[int]
     # These are present in include/linux/rds.h but don't always show up
     # here.
-    RDS_CANCEL_SENT_TO: int
-    RDS_CMSG_RDMA_ARGS: int
-    RDS_CMSG_RDMA_DEST: int
-    RDS_CMSG_RDMA_MAP: int
-    RDS_CMSG_RDMA_STATUS: int
-    RDS_CONG_MONITOR: int
-    RDS_FREE_MR: int
-    RDS_GET_MR: int
-    RDS_GET_MR_FOR_DEST: int
-    RDS_RDMA_DONTWAIT: int
-    RDS_RDMA_FENCE: int
-    RDS_RDMA_INVALIDATE: int
-    RDS_RDMA_NOTIFY_ME: int
-    RDS_RDMA_READWRITE: int
-    RDS_RDMA_SILENT: int
-    RDS_RDMA_USE_ONCE: int
-    RDS_RECVERR: int
+    RDS_CANCEL_SENT_TO: Final[int]
+    RDS_CMSG_RDMA_ARGS: Final[int]
+    RDS_CMSG_RDMA_DEST: Final[int]
+    RDS_CMSG_RDMA_MAP: Final[int]
+    RDS_CMSG_RDMA_STATUS: Final[int]
+    RDS_CONG_MONITOR: Final[int]
+    RDS_FREE_MR: Final[int]
+    RDS_GET_MR: Final[int]
+    RDS_GET_MR_FOR_DEST: Final[int]
+    RDS_RDMA_DONTWAIT: Final[int]
+    RDS_RDMA_FENCE: Final[int]
+    RDS_RDMA_INVALIDATE: Final[int]
+    RDS_RDMA_NOTIFY_ME: Final[int]
+    RDS_RDMA_READWRITE: Final[int]
+    RDS_RDMA_SILENT: Final[int]
+    RDS_RDMA_USE_ONCE: Final[int]
+    RDS_RECVERR: Final[int]
 
     # This is supported by CPython but doesn't seem to be a real thing.
     # The closest existing constant in rds.h is RDS_CMSG_CONG_UPDATE
-    # RDS_CMSG_RDMA_UPDATE: int
+    # RDS_CMSG_RDMA_UPDATE: Final[int]
 
 if sys.platform == "win32":
-    SIO_RCVALL: int
-    SIO_KEEPALIVE_VALS: int
-    SIO_LOOPBACK_FAST_PATH: int
-    RCVALL_MAX: int
-    RCVALL_OFF: int
-    RCVALL_ON: int
-    RCVALL_SOCKETLEVELONLY: int
+    SIO_RCVALL: Final[int]
+    SIO_KEEPALIVE_VALS: Final[int]
+    SIO_LOOPBACK_FAST_PATH: Final[int]
+    RCVALL_MAX: Final[int]
+    RCVALL_OFF: Final[int]
+    RCVALL_ON: Final[int]
+    RCVALL_SOCKETLEVELONLY: Final[int]
 
 if sys.platform == "linux":
-    AF_TIPC: int
-    SOL_TIPC: int
-    TIPC_ADDR_ID: int
-    TIPC_ADDR_NAME: int
-    TIPC_ADDR_NAMESEQ: int
-    TIPC_CFG_SRV: int
-    TIPC_CLUSTER_SCOPE: int
-    TIPC_CONN_TIMEOUT: int
-    TIPC_CRITICAL_IMPORTANCE: int
-    TIPC_DEST_DROPPABLE: int
-    TIPC_HIGH_IMPORTANCE: int
-    TIPC_IMPORTANCE: int
-    TIPC_LOW_IMPORTANCE: int
-    TIPC_MEDIUM_IMPORTANCE: int
-    TIPC_NODE_SCOPE: int
-    TIPC_PUBLISHED: int
-    TIPC_SRC_DROPPABLE: int
-    TIPC_SUBSCR_TIMEOUT: int
-    TIPC_SUB_CANCEL: int
-    TIPC_SUB_PORTS: int
-    TIPC_SUB_SERVICE: int
-    TIPC_TOP_SRV: int
-    TIPC_WAIT_FOREVER: int
-    TIPC_WITHDRAWN: int
-    TIPC_ZONE_SCOPE: int
+    AF_TIPC: Final[int]
+    SOL_TIPC: Final[int]
+    TIPC_ADDR_ID: Final[int]
+    TIPC_ADDR_NAME: Final[int]
+    TIPC_ADDR_NAMESEQ: Final[int]
+    TIPC_CFG_SRV: Final[int]
+    TIPC_CLUSTER_SCOPE: Final[int]
+    TIPC_CONN_TIMEOUT: Final[int]
+    TIPC_CRITICAL_IMPORTANCE: Final[int]
+    TIPC_DEST_DROPPABLE: Final[int]
+    TIPC_HIGH_IMPORTANCE: Final[int]
+    TIPC_IMPORTANCE: Final[int]
+    TIPC_LOW_IMPORTANCE: Final[int]
+    TIPC_MEDIUM_IMPORTANCE: Final[int]
+    TIPC_NODE_SCOPE: Final[int]
+    TIPC_PUBLISHED: Final[int]
+    TIPC_SRC_DROPPABLE: Final[int]
+    TIPC_SUBSCR_TIMEOUT: Final[int]
+    TIPC_SUB_CANCEL: Final[int]
+    TIPC_SUB_PORTS: Final[int]
+    TIPC_SUB_SERVICE: Final[int]
+    TIPC_TOP_SRV: Final[int]
+    TIPC_WAIT_FOREVER: Final[int]
+    TIPC_WITHDRAWN: Final[int]
+    TIPC_ZONE_SCOPE: Final[int]
 
 if sys.platform == "linux":
     # Availability: Linux >= 2.6.38
-    AF_ALG: int
-    SOL_ALG: int
-    ALG_OP_DECRYPT: int
-    ALG_OP_ENCRYPT: int
-    ALG_OP_SIGN: int
-    ALG_OP_VERIFY: int
-    ALG_SET_AEAD_ASSOCLEN: int
-    ALG_SET_AEAD_AUTHSIZE: int
-    ALG_SET_IV: int
-    ALG_SET_KEY: int
-    ALG_SET_OP: int
-    ALG_SET_PUBKEY: int
+    AF_ALG: Final[int]
+    SOL_ALG: Final[int]
+    ALG_OP_DECRYPT: Final[int]
+    ALG_OP_ENCRYPT: Final[int]
+    ALG_OP_SIGN: Final[int]
+    ALG_OP_VERIFY: Final[int]
+    ALG_SET_AEAD_ASSOCLEN: Final[int]
+    ALG_SET_AEAD_AUTHSIZE: Final[int]
+    ALG_SET_IV: Final[int]
+    ALG_SET_KEY: Final[int]
+    ALG_SET_OP: Final[int]
+    ALG_SET_PUBKEY: Final[int]
 
 if sys.platform == "linux":
     # Availability: Linux >= 4.8 (or maybe 3.9, CPython docs are confusing)
-    AF_VSOCK: int
-    IOCTL_VM_SOCKETS_GET_LOCAL_CID: int
-    VMADDR_CID_ANY: int
-    VMADDR_CID_HOST: int
-    VMADDR_PORT_ANY: int
-    SO_VM_SOCKETS_BUFFER_MAX_SIZE: int
-    SO_VM_SOCKETS_BUFFER_SIZE: int
-    SO_VM_SOCKETS_BUFFER_MIN_SIZE: int
-    VM_SOCKETS_INVALID_VERSION: int  # undocumented
+    AF_VSOCK: Final[int]
+    IOCTL_VM_SOCKETS_GET_LOCAL_CID: Final = 0x7B9
+    VMADDR_CID_ANY: Final = 0xFFFFFFFF
+    VMADDR_CID_HOST: Final = 2
+    VMADDR_PORT_ANY: Final = 0xFFFFFFFF
+    SO_VM_SOCKETS_BUFFER_MAX_SIZE: Final = 2
+    SO_VM_SOCKETS_BUFFER_SIZE: Final = 0
+    SO_VM_SOCKETS_BUFFER_MIN_SIZE: Final = 1
+    VM_SOCKETS_INVALID_VERSION: Final = 0xFFFFFFFF  # undocumented
 
 # Documented as only available on BSD, macOS, but empirically sometimes
 # available on Windows
 if sys.platform != "linux":
-    AF_LINK: int
+    AF_LINK: Final[int]
 
 has_ipv6: bool
 
 if sys.platform != "darwin" and sys.platform != "linux":
-    BDADDR_ANY: str
-    BDADDR_LOCAL: str
+    BDADDR_ANY: Final = "00:00:00:00:00:00"
+    BDADDR_LOCAL: Final = "00:00:00:FF:FF:FF"
 
 if sys.platform != "win32" and sys.platform != "darwin" and sys.platform != "linux":
-    HCI_FILTER: int  # not in NetBSD or DragonFlyBSD
-    HCI_TIME_STAMP: int  # not in FreeBSD, NetBSD, or DragonFlyBSD
-    HCI_DATA_DIR: int  # not in FreeBSD, NetBSD, or DragonFlyBSD
+    HCI_FILTER: Final[int]  # not in NetBSD or DragonFlyBSD
+    HCI_TIME_STAMP: Final[int]  # not in FreeBSD, NetBSD, or DragonFlyBSD
+    HCI_DATA_DIR: Final[int]  # not in FreeBSD, NetBSD, or DragonFlyBSD
 
 if sys.platform == "linux":
-    AF_QIPCRTR: int  # Availability: Linux >= 4.7
+    AF_QIPCRTR: Final[int]  # Availability: Linux >= 4.7
 
 if sys.version_info >= (3, 11) and sys.platform != "linux" and sys.platform != "win32" and sys.platform != "darwin":
     # FreeBSD
-    SCM_CREDS2: int
-    LOCAL_CREDS: int
-    LOCAL_CREDS_PERSISTENT: int
+    SCM_CREDS2: Final[int]
+    LOCAL_CREDS: Final[int]
+    LOCAL_CREDS_PERSISTENT: Final[int]
 
 if sys.version_info >= (3, 11) and sys.platform == "linux":
-    SO_INCOMING_CPU: int  # Availability: Linux >= 3.9
+    SO_INCOMING_CPU: Final[int]  # Availability: Linux >= 3.9
 
 if sys.version_info >= (3, 12) and sys.platform == "win32":
     # Availability: Windows
-    AF_HYPERV: int
-    HV_PROTOCOL_RAW: int
-    HVSOCKET_CONNECT_TIMEOUT: int
-    HVSOCKET_CONNECT_TIMEOUT_MAX: int
-    HVSOCKET_CONNECTED_SUSPEND: int
-    HVSOCKET_ADDRESS_FLAG_PASSTHRU: int
-    HV_GUID_ZERO: str
-    HV_GUID_WILDCARD: str
-    HV_GUID_BROADCAST: str
-    HV_GUID_CHILDREN: str
-    HV_GUID_LOOPBACK: str
-    HV_GUID_PARENT: str
+    AF_HYPERV: Final[int]
+    HV_PROTOCOL_RAW: Final[int]
+    HVSOCKET_CONNECT_TIMEOUT: Final[int]
+    HVSOCKET_CONNECT_TIMEOUT_MAX: Final[int]
+    HVSOCKET_CONNECTED_SUSPEND: Final[int]
+    HVSOCKET_ADDRESS_FLAG_PASSTHRU: Final[int]
+    HV_GUID_ZERO: Final = "00000000-0000-0000-0000-000000000000"
+    HV_GUID_WILDCARD: Final = "00000000-0000-0000-0000-000000000000"
+    HV_GUID_BROADCAST: Final = "FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF"
+    HV_GUID_CHILDREN: Final = "90DB8B89-0D35-4F79-8CE9-49EA0AC8B7CD"
+    HV_GUID_LOOPBACK: Final = "E0E16197-DD56-4A10-9195-5EE7A155A838"
+    HV_GUID_PARENT: Final = "A42E7CDA-D03F-480C-9CC2-A4DE20ABB878"
 
 if sys.version_info >= (3, 12):
     if sys.platform != "win32":
         # Availability: Linux, FreeBSD, macOS
-        ETHERTYPE_ARP: int
-        ETHERTYPE_IP: int
-        ETHERTYPE_IPV6: int
-        ETHERTYPE_VLAN: int
+        ETHERTYPE_ARP: Final[int]
+        ETHERTYPE_IP: Final[int]
+        ETHERTYPE_IPV6: Final[int]
+        ETHERTYPE_VLAN: Final[int]
 
 # --------------------
 # Semi-documented constants
@@ -639,95 +639,95 @@ if sys.version_info >= (3, 12):
 
 if sys.platform == "linux":
     # Netlink is defined by Linux
-    AF_NETLINK: int
-    NETLINK_CRYPTO: int
-    NETLINK_DNRTMSG: int
-    NETLINK_FIREWALL: int
-    NETLINK_IP6_FW: int
-    NETLINK_NFLOG: int
-    NETLINK_ROUTE: int
-    NETLINK_USERSOCK: int
-    NETLINK_XFRM: int
+    AF_NETLINK: Final[int]
+    NETLINK_CRYPTO: Final[int]
+    NETLINK_DNRTMSG: Final[int]
+    NETLINK_FIREWALL: Final[int]
+    NETLINK_IP6_FW: Final[int]
+    NETLINK_NFLOG: Final[int]
+    NETLINK_ROUTE: Final[int]
+    NETLINK_USERSOCK: Final[int]
+    NETLINK_XFRM: Final[int]
     # Technically still supported by CPython
-    # NETLINK_ARPD: int  # linux 2.0 to 2.6.12 (EOL August 2005)
-    # NETLINK_ROUTE6: int  # linux 2.2 to 2.6.12 (EOL August 2005)
-    # NETLINK_SKIP: int  # linux 2.0 to 2.6.12 (EOL August 2005)
-    # NETLINK_TAPBASE: int  # linux 2.2 to 2.6.12 (EOL August 2005)
-    # NETLINK_TCPDIAG: int  # linux 2.6.0 to 2.6.13 (EOL December 2005)
-    # NETLINK_W1: int  # linux 2.6.13 to 2.6.17 (EOL October 2006)
+    # NETLINK_ARPD: Final[int]  # linux 2.0 to 2.6.12 (EOL August 2005)
+    # NETLINK_ROUTE6: Final[int]  # linux 2.2 to 2.6.12 (EOL August 2005)
+    # NETLINK_SKIP: Final[int]  # linux 2.0 to 2.6.12 (EOL August 2005)
+    # NETLINK_TAPBASE: Final[int]  # linux 2.2 to 2.6.12 (EOL August 2005)
+    # NETLINK_TCPDIAG: Final[int]  # linux 2.6.0 to 2.6.13 (EOL December 2005)
+    # NETLINK_W1: Final[int]  # linux 2.6.13 to 2.6.17 (EOL October 2006)
 
 if sys.platform == "darwin":
-    PF_SYSTEM: int
-    SYSPROTO_CONTROL: int
+    PF_SYSTEM: Final[int]
+    SYSPROTO_CONTROL: Final[int]
 
 if sys.platform != "darwin" and sys.platform != "linux":
-    AF_BLUETOOTH: int
+    AF_BLUETOOTH: Final[int]
 
 if sys.platform != "win32" and sys.platform != "darwin" and sys.platform != "linux":
     # Linux and some BSD support is explicit in the docs
     # Windows and macOS do not support in practice
-    BTPROTO_HCI: int
-    BTPROTO_L2CAP: int
-    BTPROTO_SCO: int  # not in FreeBSD
+    BTPROTO_HCI: Final[int]
+    BTPROTO_L2CAP: Final[int]
+    BTPROTO_SCO: Final[int]  # not in FreeBSD
 if sys.platform != "darwin" and sys.platform != "linux":
-    BTPROTO_RFCOMM: int
+    BTPROTO_RFCOMM: Final[int]
 
 if sys.platform == "linux":
-    UDPLITE_RECV_CSCOV: int
-    UDPLITE_SEND_CSCOV: int
+    UDPLITE_RECV_CSCOV: Final[int]
+    UDPLITE_SEND_CSCOV: Final[int]
 
 # --------------------
 # Documented under socket.shutdown
 # --------------------
-SHUT_RD: int
-SHUT_RDWR: int
-SHUT_WR: int
+SHUT_RD: Final[int]
+SHUT_RDWR: Final[int]
+SHUT_WR: Final[int]
 
 # --------------------
 # Undocumented constants
 # --------------------
 
 # Undocumented address families
-AF_APPLETALK: int
-AF_DECnet: int
-AF_IPX: int
-AF_SNA: int
+AF_APPLETALK: Final[int]
+AF_DECnet: Final[int]
+AF_IPX: Final[int]
+AF_SNA: Final[int]
 
 if sys.platform != "win32":
-    AF_ROUTE: int
+    AF_ROUTE: Final[int]
 
 if sys.platform == "darwin":
-    AF_SYSTEM: int
+    AF_SYSTEM: Final[int]
 
 if sys.platform != "darwin":
-    AF_IRDA: int
+    AF_IRDA: Final[int]
 
 if sys.platform != "win32" and sys.platform != "darwin":
-    AF_ASH: int
-    AF_ATMPVC: int
-    AF_ATMSVC: int
-    AF_AX25: int
-    AF_BRIDGE: int
-    AF_ECONET: int
-    AF_KEY: int
-    AF_LLC: int
-    AF_NETBEUI: int
-    AF_NETROM: int
-    AF_PPPOX: int
-    AF_ROSE: int
-    AF_SECURITY: int
-    AF_WANPIPE: int
-    AF_X25: int
+    AF_ASH: Final[int]
+    AF_ATMPVC: Final[int]
+    AF_ATMSVC: Final[int]
+    AF_AX25: Final[int]
+    AF_BRIDGE: Final[int]
+    AF_ECONET: Final[int]
+    AF_KEY: Final[int]
+    AF_LLC: Final[int]
+    AF_NETBEUI: Final[int]
+    AF_NETROM: Final[int]
+    AF_PPPOX: Final[int]
+    AF_ROSE: Final[int]
+    AF_SECURITY: Final[int]
+    AF_WANPIPE: Final[int]
+    AF_X25: Final[int]
 
 # Miscellaneous undocumented
 
 if sys.platform != "win32" and sys.platform != "linux":
-    LOCAL_PEERCRED: int
+    LOCAL_PEERCRED: Final[int]
 
 if sys.platform != "win32" and sys.platform != "darwin":
     # Defined in linux socket.h, but this isn't always present for
     # some reason.
-    IPX_TYPE: int
+    IPX_TYPE: Final[int]
 
 # ===== Classes =====
 
@@ -743,10 +743,10 @@ class socket:
     def timeout(self) -> float | None: ...  # noqa: F811
     if sys.platform == "win32":
         def __init__(
-            self, family: int = ..., type: int = ..., proto: int = ..., fileno: SupportsIndex | bytes | None = ...
+            self, family: int = ..., type: int = ..., proto: int = 0, fileno: SupportsIndex | bytes | None = None
         ) -> None: ...
     else:
-        def __init__(self, family: int = ..., type: int = ..., proto: int = ..., fileno: SupportsIndex | None = ...) -> None: ...
+        def __init__(self, family: int = ..., type: int = ..., proto: int = 0, fileno: SupportsIndex | None = None) -> None: ...
 
     def bind(self, address: _Address, /) -> None: ...
     def close(self) -> None: ...
@@ -766,18 +766,18 @@ class socket:
         def ioctl(self, control: int, option: int | tuple[int, int, int] | bool, /) -> None: ...
 
     def listen(self, backlog: int = ..., /) -> None: ...
-    def recv(self, bufsize: int, flags: int = ..., /) -> bytes: ...
-    def recvfrom(self, bufsize: int, flags: int = ..., /) -> tuple[bytes, _RetAddress]: ...
+    def recv(self, bufsize: int, flags: int = 0, /) -> bytes: ...
+    def recvfrom(self, bufsize: int, flags: int = 0, /) -> tuple[bytes, _RetAddress]: ...
     if sys.platform != "win32":
-        def recvmsg(self, bufsize: int, ancbufsize: int = ..., flags: int = ..., /) -> tuple[bytes, list[_CMSG], int, Any]: ...
+        def recvmsg(self, bufsize: int, ancbufsize: int = 0, flags: int = 0, /) -> tuple[bytes, list[_CMSG], int, Any]: ...
         def recvmsg_into(
-            self, buffers: Iterable[WriteableBuffer], ancbufsize: int = ..., flags: int = ..., /
+            self, buffers: Iterable[WriteableBuffer], ancbufsize: int = 0, flags: int = 0, /
         ) -> tuple[int, list[_CMSG], int, Any]: ...
 
-    def recvfrom_into(self, buffer: WriteableBuffer, nbytes: int = ..., flags: int = ...) -> tuple[int, _RetAddress]: ...
-    def recv_into(self, buffer: WriteableBuffer, nbytes: int = ..., flags: int = ...) -> int: ...
-    def send(self, data: ReadableBuffer, flags: int = ..., /) -> int: ...
-    def sendall(self, data: ReadableBuffer, flags: int = ..., /) -> None: ...
+    def recvfrom_into(self, buffer: WriteableBuffer, nbytes: int = 0, flags: int = 0) -> tuple[int, _RetAddress]: ...
+    def recv_into(self, buffer: WriteableBuffer, nbytes: int = 0, flags: int = 0) -> int: ...
+    def send(self, data: ReadableBuffer, flags: int = 0, /) -> int: ...
+    def sendall(self, data: ReadableBuffer, flags: int = 0, /) -> None: ...
     @overload
     def sendto(self, data: ReadableBuffer, address: _Address, /) -> int: ...
     @overload
@@ -787,13 +787,13 @@ class socket:
             self,
             buffers: Iterable[ReadableBuffer],
             ancdata: Iterable[_CMSGArg] = ...,
-            flags: int = ...,
-            address: _Address | None = ...,
+            flags: int = 0,
+            address: _Address | None = None,
             /,
         ) -> int: ...
     if sys.platform == "linux":
         def sendmsg_afalg(
-            self, msg: Iterable[ReadableBuffer] = ..., *, op: int, iv: Any = ..., assoclen: int = ..., flags: int = ...
+            self, msg: Iterable[ReadableBuffer] = ..., *, op: int, iv: Any = ..., assoclen: int = ..., flags: int = 0
         ) -> int: ...
 
     def setblocking(self, flag: bool, /) -> None: ...
@@ -816,12 +816,7 @@ def dup(fd: SupportsIndex, /) -> int: ...
 
 # the 5th tuple item is an address
 def getaddrinfo(
-    host: bytes | str | None,
-    port: bytes | str | int | None,
-    family: int = ...,
-    type: int = ...,
-    proto: int = ...,
-    flags: int = ...,
+    host: bytes | str | None, port: bytes | str | int | None, family: int = ..., type: int = 0, proto: int = 0, flags: int = 0
 ) -> list[tuple[int, int, int, str, tuple[str, int] | tuple[str, int, int, int] | tuple[int, bytes]]]: ...
 def gethostbyname(hostname: str, /) -> str: ...
 def gethostbyname_ex(hostname: str, /) -> tuple[str, list[str], list[str]]: ...
@@ -848,7 +843,7 @@ if sys.platform != "win32":
     def sethostname(name: str, /) -> None: ...
     def CMSG_LEN(length: int, /) -> int: ...
     def CMSG_SPACE(length: int, /) -> int: ...
-    def socketpair(family: int = ..., type: int = ..., proto: int = ..., /) -> tuple[socket, socket]: ...
+    def socketpair(family: int = ..., type: int = ..., proto: int = 0, /) -> tuple[socket, socket]: ...
 
 def if_nameindex() -> list[tuple[int, str]]: ...
 def if_nametoindex(oname: str, /) -> int: ...
diff --git a/stdlib/socket.pyi b/stdlib/socket.pyi
index 491551dd52b1..d62f4c228151 100644
--- a/stdlib/socket.pyi
+++ b/stdlib/socket.pyi
@@ -1051,14 +1051,12 @@ if sys.version_info >= (3, 14):
 
     if sys.platform == "linux":
         from _socket import (
-            CAN_RAW_ERR_FILTER as CAN_RAW_ERR_FILTER,
             IP_FREEBIND as IP_FREEBIND,
             IP_RECVORIGDSTADDR as IP_RECVORIGDSTADDR,
-            SO_ORIGINAL_DST as SO_ORIGINAL_DST,
             VMADDR_CID_LOCAL as VMADDR_CID_LOCAL,
         )
 
-        __all__ += ["CAN_RAW_ERR_FILTER", "IP_FREEBIND", "IP_RECVORIGDSTADDR", "VMADDR_CID_LOCAL"]
+        __all__ += ["IP_FREEBIND", "IP_RECVORIGDSTADDR", "VMADDR_CID_LOCAL"]
 
 # Re-exported from errno
 EBADF: int