From cc15b8c6ad34be355787b0db93a98c8354dcfc15 Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Sun, 15 Feb 2026 04:47:16 +0000
Subject: [PATCH] refactor(infra): reuse lan ip picker

---
 src/infra/system-presence.ts | 21 ++-------------------
 1 file changed, 2 insertions(+), 19 deletions(-)

diff --git a/src/infra/system-presence.ts b/src/infra/system-presence.ts
index c78f5ccc100..c8e7ac26248 100644
--- a/src/infra/system-presence.ts
+++ b/src/infra/system-presence.ts
@@ -1,5 +1,6 @@
 import { spawnSync } from "node:child_process";
 import os from "node:os";
+import { pickPrimaryLanIPv4 } from "../gateway/net.js";
 
 export type SystemPresence = {
   host?: string;
@@ -43,25 +44,7 @@ function normalizePresenceKey(key: string | undefined): string | undefined {
 }
 
 function resolvePrimaryIPv4(): string | undefined {
-  const nets = os.networkInterfaces();
-  const prefer = ["en0", "eth0"];
-  const pick = (names: string[]) => {
-    for (const name of names) {
-      const list = nets[name];
-      const entry = list?.find((n) => n.family === "IPv4" && !n.internal);
-      if (entry?.address) {
-        return entry.address;
-      }
-    }
-    for (const list of Object.values(nets)) {
-      const entry = list?.find((n) => n.family === "IPv4" && !n.internal);
-      if (entry?.address) {
-        return entry.address;
-      }
-    }
-    return undefined;
-  };
-  return pick(prefer) ?? os.hostname();
+  return pickPrimaryLanIPv4() ?? os.hostname();
 }
 
 function initSelfPresence() {