From 115898d713494761621ef2f78547ec06f9a0799b Mon Sep 17 00:00:00 2001
From: 8thgencore <axelmaker@ya.ru>
Date: Sat, 18 Apr 2026 15:16:35 +0300
Subject: [PATCH] fix: bind SIP media sockets to signaling interface

---
 pkg/sip/inbound.go    | 1 +
 pkg/sip/media_port.go | 7 ++++++-
 pkg/sip/outbound.go   | 1 +
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/pkg/sip/inbound.go b/pkg/sip/inbound.go
index 29c8a5b4..b80c8cfe 100644
--- a/pkg/sip/inbound.go
+++ b/pkg/sip/inbound.go
@@ -990,6 +990,7 @@ func (c *inboundCall) runMediaConn(tid traceid.ID, offerData []byte, enc livekit
 	logSignalChanges, _ = strconv.ParseBool(featureFlags[signalLoggingFeatureFlag])
 	mp, err := NewMediaPort(tid, c.log(), c.mon, &MediaOptions{
 		IP:                  c.s.sconf.MediaIP,
+		BindIP:              c.s.sconf.SignalingIPLocal,
 		Ports:               conf.RTPPort,
 		MediaTimeoutInitial: c.s.conf.MediaTimeoutInitial,
 		MediaTimeout:        c.s.conf.MediaTimeout,
diff --git a/pkg/sip/media_port.go b/pkg/sip/media_port.go
index a18ee58a..84b5cc6a 100644
--- a/pkg/sip/media_port.go
+++ b/pkg/sip/media_port.go
@@ -306,6 +306,7 @@ type MediaConf struct {
 
 type MediaOptions struct {
 	IP                  netip.Addr
+	BindIP              netip.Addr
 	Ports               rtcconfig.PortRange
 	MediaTimeoutInitial time.Duration
 	MediaTimeout        time.Duration
@@ -335,7 +336,11 @@ func NewMediaPortWith(tid traceid.ID, log logger.Logger, mon *stats.CallMonitor,
 		opts.Stats = &PortStats{}
 	}
 	if conn == nil {
-		c, err := rtp.ListenUDPPortRange(opts.Ports.Start, opts.Ports.End, netip.AddrFrom4([4]byte{0, 0, 0, 0}))
+		bindIP := opts.BindIP
+		if !bindIP.IsValid() {
+			bindIP = netip.AddrFrom4([4]byte{0, 0, 0, 0})
+		}
+		c, err := rtp.ListenUDPPortRange(opts.Ports.Start, opts.Ports.End, bindIP)
 		if err != nil {
 			return nil, err
 		}
diff --git a/pkg/sip/outbound.go b/pkg/sip/outbound.go
index 1db50978..ff2dca31 100644
--- a/pkg/sip/outbound.go
+++ b/pkg/sip/outbound.go
@@ -147,6 +147,7 @@ func (c *Client) newCall(ctx context.Context, tid traceid.ID, conf *config.Confi
 
 	call.media, err = NewMediaPort(tid, call.log, call.mon, &MediaOptions{
 		IP:                  c.sconf.MediaIP,
+		BindIP:              c.sconf.SignalingIPLocal,
 		Ports:               conf.RTPPort,
 		MediaTimeoutInitial: c.conf.MediaTimeoutInitial,
 		MediaTimeout:        c.conf.MediaTimeout,