From fd18995cf36ad14a3ce89dfa0a100bbf629a7529 Mon Sep 17 00:00:00 2001
From: ybyang <10629930+whybeyoung@users.noreply.github.com>
Date: Thu, 28 Aug 2025 01:28:52 +0800
Subject: [PATCH] Fix get_ip when no external network (#9700)

---
 python/sglang/srt/utils.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/python/sglang/srt/utils.py b/python/sglang/srt/utils.py
index 1ef3c8fd6..b5f6626a2 100644
--- a/python/sglang/srt/utils.py
+++ b/python/sglang/srt/utils.py
@@ -1964,6 +1964,15 @@ def get_ip() -> str:
     except Exception:
         pass
 
+    # try  using hostname
+    hostname = socket.gethostname()
+    try:
+        ip_addr = socket.gethostbyname(hostname)
+        warnings.warn("using local ip address: {}".format(ip_addr))
+        return ip_addr
+    except Exception:
+        pass
+
     warnings.warn(
         "Failed to get the IP address, using 0.0.0.0 by default."
         "The value can be set by the environment variable"