Use netlink-packet-route 0.31.0

Signed-off-by: Gris Ge <cnfourt@gmail.com>

Author: cathay4t

Cargo.toml

@@ -23,7 +23,7 @@ futures-channel = "0.3.11"
 log = "0.4.8"
 thiserror = "2"
 netlink-sys = { version = "0.8" }
-netlink-packet-route = { version = "0.30" }
+netlink-packet-route = { version = "0.31.0" }
 netlink-packet-core = { version = "0.8" }
 netlink-proto = { default-features = false, version = "0.12.0" }
 nix = { version = "0.30.0", default-features = false, features = ["fs", "mount", "sched", "signal"] }

src/link/iptun.rs

@@ -108,7 +108,11 @@ impl LinkMessageBuilder<LinkIpIp> {
     /// This is equivalent to `external` in command
     /// `ip link add name NAME type ipip external`.
     pub fn collect_metadata(self, enabled: bool) -> Self {
-        self.append_info_data(InfoIpTunnel::CollectMetadata(enabled))
+        if enabled {
+            self.append_info_data(InfoIpTunnel::CollectMetadata)
+        } else {
+            self
+        }
     }
 
     /// This is equivalent to `fwmark MARK` in command