From 7cb8af90290966755c1a74fc444dd65824d30749 Mon Sep 17 00:00:00 2001
From: Aroun <login@b-vo.fr>
Date: Thu, 7 Jul 2022 19:19:29 +0200
Subject: [PATCH] lib/osutil: Only announce address of interfaces which are up
 (fixes #7458) (#8422)

---
 lib/osutil/lan.go | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/lib/osutil/lan.go b/lib/osutil/lan.go
index 68bdfcdaf..2b498416a 100644
--- a/lib/osutil/lan.go
+++ b/lib/osutil/lan.go
@@ -11,10 +11,21 @@ import (
 )
 
 func GetLans() ([]*net.IPNet, error) {
-	addrs, err := net.InterfaceAddrs()
+	ifs, err := net.Interfaces()
 	if err != nil {
 		return nil, err
 	}
+	addrs := []net.Addr{}
+	for _, currentIf := range ifs {
+		if currentIf.Flags&net.FlagUp != net.FlagUp {
+			continue
+		}
+		currentAddrs, err := currentIf.Addrs()
+		if err != nil {
+			return nil, err
+		}
+		addrs = append(addrs, currentAddrs...)
+	}
 
 	nets := make([]*net.IPNet, 0, len(addrs))