Use if-watch instead of local_ip_address

Author: macladson

Cargo.lock

@@ -26,10 +26,10 @@ fnv = { workspace = true }
 futures = { workspace = true }
 gossipsub = { workspace = true }
 hex = { workspace = true }
+if-watch = "3.2.1"
 itertools = { workspace = true }
 libp2p-mplex = "0.43"
 lighthouse_version = { workspace = true }
-local-ip-address = "0.6"
 logging = { workspace = true }
 lru = { workspace = true }
 lru_cache = { workspace = true }

beacon_node/lighthouse_network/Cargo.toml

@@ -5,8 +5,8 @@ use crate::{Enr, PeerIdSerialized};
 use directory::{
     DEFAULT_BEACON_NODE_DIR, DEFAULT_HARDCODED_NETWORK, DEFAULT_NETWORK_DIR, DEFAULT_ROOT_DIR,
 };
+use if_watch::{IpNet, tokio::IfWatcher};
 use libp2p::Multiaddr;
-use local_ip_address::local_ipv6;
 use network_utils::listen_addr::{ListenAddr, ListenAddress};
 use serde::{Deserialize, Serialize};
 use sha2::{Digest, Sha256};
@@ -262,13 +262,13 @@ impl Config {
     /// A helper function to check if the local host has a globally routeable IPv6 address. If so,
     /// returns true.
     pub fn is_ipv6_supported() -> bool {
-        // If IPv6 is supported
-        let Ok(std::net::IpAddr::V6(local_ip)) = local_ipv6() else {
+        let Ok(watcher) = IfWatcher::new() else {
             return false;
         };
 
-        // If its globally routable, return true
-        is_global_ipv6(&local_ip)
+        watcher
+            .iter()
+            .any(|addr| matches!(addr, IpNet::V6(ip) if is_global_ipv6(&ip.addr())))
     }
 
     pub fn listen_addrs(&self) -> &ListenAddress {