diff --git a/conf/sofia.conf.xml b/conf/sofia.conf.xml
index e14edc6133..17ea7804fa 100644
--- a/conf/sofia.conf.xml
+++ b/conf/sofia.conf.xml
@@ -88,7 +88,7 @@
 	<!-- <param name="auth-all-packets" value="true"/> -->
 
 	<param name="ext-rtp-ip" value="$${external_rtp_ip}"/>
-	<param name="ext-sip-ip" value="$${external_sip_ip}"/>
+	<!-- <param name="ext-sip-ip" value="$${external_sip_ip}"/> -->
 
 	<!-- VAD choose one (out is a good choice); -->
 	<!-- <param name="vad" value="in"/> -->