diff --git a/go.mod b/go.mod
index 95aa94077..09c04ff40 100644
--- a/go.mod
+++ b/go.mod
@@ -22,7 +22,7 @@ require (
 	github.com/jellydator/ttlcache/v3 v3.4.0
 	github.com/jxskiss/base62 v1.1.0
 	github.com/livekit/mageutil v0.0.0-20250511045019-0f1ff63f7731
-	github.com/livekit/mediatransportutil v0.0.0-20260113174415-2e8ba344fca3
+	github.com/livekit/mediatransportutil v0.0.0-20260309115634-0e2e24b36ee8
 	github.com/livekit/protocol v1.45.1-0.20260306195537-8d130a7700dc
 	github.com/livekit/psrpc v0.7.1
 	github.com/mackerelio/go-osstat v0.2.6
diff --git a/go.sum b/go.sum
index 151ce64ff..25a4ccf70 100644
--- a/go.sum
+++ b/go.sum
@@ -175,8 +175,8 @@ github.com/lithammer/shortuuid/v4 v4.2.0 h1:LMFOzVB3996a7b8aBuEXxqOBflbfPQAiVzkI
 github.com/lithammer/shortuuid/v4 v4.2.0/go.mod h1:D5noHZ2oFw/YaKCfGy0YxyE7M0wMbezmMjPdhyEFe6Y=
 github.com/livekit/mageutil v0.0.0-20250511045019-0f1ff63f7731 h1:9x+U2HGLrSw5ATTo469PQPkqzdoU7be46ryiCDO3boc=
 github.com/livekit/mageutil v0.0.0-20250511045019-0f1ff63f7731/go.mod h1:Rs3MhFwutWhGwmY1VQsygw28z5bWcnEYmS1OG9OxjOQ=
-github.com/livekit/mediatransportutil v0.0.0-20260113174415-2e8ba344fca3 h1:v1Xc/q/547TjLX7Nw5y2vXNnmV0XYFAbhTJrtErQeDA=
-github.com/livekit/mediatransportutil v0.0.0-20260113174415-2e8ba344fca3/go.mod h1:QBx/KHV6Vv00ggibg/WrOlqrkTciEA2Hc9DGWYr3Q9U=
+github.com/livekit/mediatransportutil v0.0.0-20260309115634-0e2e24b36ee8 h1:coWig9fKxdb/nwOaIoGUUAogso12GblAJh/9SA9hcxk=
+github.com/livekit/mediatransportutil v0.0.0-20260309115634-0e2e24b36ee8/go.mod h1:RCd46PT+6sEztld6XpkCrG1xskb0u3SqxIjy4G897Ss=
 github.com/livekit/protocol v1.45.1-0.20260306195537-8d130a7700dc h1:UggX1s3nghwMuwmHvnF1ZONWSxjOUILLyhaC4pTyCNA=
 github.com/livekit/protocol v1.45.1-0.20260306195537-8d130a7700dc/go.mod h1:63AUi0vQak6Y6gPqSBHLc+ExYTUwEqF/m4b2IRW1iO0=
 github.com/livekit/psrpc v0.7.1 h1:ms37az0QTD3UXIWuUC5D/SkmKOlRMVRsI261eBWu/Vw=
diff --git a/pkg/config/config.go b/pkg/config/config.go
index 30545e827..12411b727 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -796,7 +796,7 @@ func (conf *Config) updateFromCLI(c *cli.Command, baseFlags []cli.Flag) error {
 		conf.TURN.KeyFile = c.String("turn-key")
 	}
 	if c.IsSet("node-ip") {
-		conf.RTC.NodeIP = c.String("node-ip")
+		conf.RTC.NodeIP.UnmarshalString(c.String("node-ip"))
 	}
 	if c.IsSet("udp-port") {
 		conf.RTC.UDPPort.UnmarshalString(c.String("udp-port"))
diff --git a/pkg/routing/node.go b/pkg/routing/node.go
index 183faff58..df47226e9 100644
--- a/pkg/routing/node.go
+++ b/pkg/routing/node.go
@@ -48,7 +48,7 @@ type LocalNodeImpl struct {
 
 func NewLocalNode(conf *config.Config) (*LocalNodeImpl, error) {
 	nodeID := guid.New(utils.NodePrefix)
-	if conf != nil && conf.RTC.NodeIP == "" {
+	if conf != nil && conf.RTC.NodeIP.IsEmpty() {
 		return nil, ErrIPNotSet
 	}
 	nowUnix := time.Now().Unix()
@@ -65,7 +65,7 @@ func NewLocalNode(conf *config.Config) (*LocalNodeImpl, error) {
 	}
 	var nsc *config.NodeStatsConfig
 	if conf != nil {
-		l.node.Ip = conf.RTC.NodeIP
+		l.node.Ip = conf.RTC.NodeIP.PrimaryIP()
 		l.node.Region = conf.Region
 
 		nsc = &conf.NodeStats
diff --git a/pkg/service/turn.go b/pkg/service/turn.go
index 2e26b1a8b..1dca87040 100644
--- a/pkg/service/turn.go
+++ b/pkg/service/turn.go
@@ -53,6 +53,9 @@ func NewTurnServer(conf *config.Config, authHandler turn.AuthHandler, standalone
 	if turnConf.TLSPort <= 0 && turnConf.UDPPort <= 0 {
 		return nil, errors.New("invalid TURN ports")
 	}
+	if conf.RTC.NodeIP.V4 == "" {
+		return nil, errors.New("invalid node IPv4 for relay")
+	}
 
 	serverConfig := turn.ServerConfig{
 		Realm:         LivekitRealm,
@@ -60,7 +63,7 @@ func NewTurnServer(conf *config.Config, authHandler turn.AuthHandler, standalone
 		LoggerFactory: pionlogger.NewLoggerFactory(logger.GetLogger()),
 	}
 	var relayAddrGen turn.RelayAddressGenerator = &turn.RelayAddressGeneratorPortRange{
-		RelayAddress: net.ParseIP(conf.RTC.NodeIP),
+		RelayAddress: net.ParseIP(conf.RTC.NodeIP.V4),
 		Address:      "0.0.0.0",
 		MinPort:      turnConf.RelayPortRangeStart,
 		MaxPort:      turnConf.RelayPortRangeEnd,