Use if-addrs instead of local_ip_address (#8659)

Swaps out the `local_ip_address` dependency for `if-addrs`. The reason for this is that is that `local_ip_address` is a relatively heavy dependency (depends on `neli`) compared to `if-addrs` and we only use it to check the presence of an IPv6 interface. This is an experiment to see if we can use the more lightweight `if-addrs` instead.


Co-Authored-By: Mac L <mjladson@pm.me>

Cargo.lock

@@ -2552,37 +2552,6 @@ dependencies = [
  "syn 2.0.111",
 ]
 
-[[package]]
-name = "derive_builder"
-version = "0.20.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "507dfb09ea8b7fa618fcf76e953f4f5e192547945816d5358edffe39f6f94947"
-dependencies = [
- "derive_builder_macro",
-]
-
-[[package]]
-name = "derive_builder_core"
-version = "0.20.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2d5bcf7b024d6835cfb3d473887cd966994907effbe9227e8c8219824d06c4e8"
-dependencies = [
- "darling 0.20.11",
- "proc-macro2",
- "quote",
- "syn 2.0.111",
-]
-
-[[package]]
-name = "derive_builder_macro"
-version = "0.20.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab63b0e2bf4d5928aff72e83a7dace85d7bba5fe12dcc3c5a572d78caffd3f3c"
-dependencies = [
- "derive_builder_core",
- "syn 2.0.111",
-]
-
 [[package]]
 name = "derive_more"
 version = "0.99.20"
@@ -3810,18 +3779,6 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "getset"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9cf0fc11e47561d47397154977bc219f4cf809b2974facc3ccb3b89e2436f912"
-dependencies = [
- "proc-macro-error2",
- "proc-macro2",
- "quote",
- "syn 2.0.111",
-]
-
 [[package]]
 name = "ghash"
 version = "0.5.1"
@@ -4552,6 +4509,16 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "if-addrs"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf39cc0423ee66021dc5eccface85580e4a001e0c5288bae8bea7ecb69225e90"
+dependencies = [
+ "libc",
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "if-watch"
 version = "3.2.1"
@@ -4562,7 +4529,7 @@ dependencies = [
  "core-foundation 0.9.4",
  "fnv",
  "futures",
- "if-addrs",
+ "if-addrs 0.10.2",
  "ipnet",
  "log",
  "netlink-packet-core",
@@ -5453,11 +5420,11 @@ dependencies = [
  "fnv",
  "futures",
  "hex",
+ "if-addrs 0.14.0",
  "itertools 0.10.5",
  "libp2p",
  "libp2p-mplex",
  "lighthouse_version",
- "local-ip-address",
  "logging",
  "lru 0.12.5",
  "lru_cache",
@@ -5559,18 +5526,6 @@ dependencies = [
  "pkg-config",
 ]
 
-[[package]]
-name = "local-ip-address"
-version = "0.6.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a60bf300a990b2d1ebdde4228e873e8e4da40d834adbf5265f3da1457ede652"
-dependencies = [
- "libc",
- "neli",
- "thiserror 2.0.17",
- "windows-sys 0.61.2",
-]
-
 [[package]]
 name = "lock_api"
 version = "0.4.14"
@@ -6048,35 +6003,6 @@ dependencies = [
  "tempfile",
 ]
 
-[[package]]
-name = "neli"
-version = "0.7.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e23bebbf3e157c402c4d5ee113233e5e0610cc27453b2f07eefce649c7365dcc"
-dependencies = [
- "bitflags 2.10.0",
- "byteorder",
- "derive_builder",
- "getset",
- "libc",
- "log",
- "neli-proc-macros",
- "parking_lot",
-]
-
-[[package]]
-name = "neli-proc-macros"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05d8d08c6e98f20a62417478ebf7be8e1425ec9acecc6f63e22da633f6b71609"
-dependencies = [
- "either",
- "proc-macro2",
- "quote",
- "serde",
- "syn 2.0.111",
-]
-
 [[package]]
 name = "netlink-packet-core"
 version = "0.7.0"

beacon_node/lighthouse_network/Cargo.toml

@@ -22,11 +22,11 @@ fixed_bytes = { workspace = true }
 fnv = { workspace = true }
 futures = { workspace = true }
 hex = { workspace = true }
+if-addrs = "0.14"
 itertools = { workspace = true }
 libp2p = { workspace = true }
 libp2p-mplex = { git = "https://github.com/libp2p/rust-libp2p.git" }
 lighthouse_version = { workspace = true }
-local-ip-address = "0.6"
 logging = { workspace = true }
 lru = { workspace = true }
 lru_cache = { workspace = true }

beacon_node/lighthouse_network/src/config.rs

@@ -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_addrs::get_if_addrs;
 use libp2p::{Multiaddr, gossipsub};
-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(addrs) = get_if_addrs() else {
             return false;
         };
 
-        // If its globally routable, return true
-        is_global_ipv6(&local_ip)
+        addrs.iter().any(
+            |iface| matches!(iface.addr, if_addrs::IfAddr::V6(ref v6) if is_global_ipv6(&v6.ip)),
+        )
     }
 
     pub fn listen_addrs(&self) -> &ListenAddress {