diff --git a/docker-compose.yml b/docker-compose.yml
index 18acb38..95fdc43 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -94,7 +94,8 @@ services:
       KMS_MIN_PORT: 24577
       KMS_MAX_PORT: 32768
       KMS_EXTERNAL_ADDRESS: ${EXTERNAL_IP} 
-      KMS_TURN_URL: 
+      KMS_TURN_URL:
+      KMS_NETWORK_INTERFACES: ${NETWORK_INTERFACE:-}
     network_mode: host
   
   webrtc-sfu:
diff --git a/sample.env b/sample.env
index 9849dc7..cfe5a4a 100644
--- a/sample.env
+++ b/sample.env
@@ -7,6 +7,10 @@ DOMAIN=bbb.example.com
 
 EXTERNAL_IP=144.76.97.10
 
+# setting the network interface speeds up kurentos WebRTC connection time
+#NETWORK_INTERFACE=ens3
+
+# STUN SERVER
 # stun.freeswitch.org
 STUN_IP=216.93.246.18
 STUN_PORT=3478
@@ -193,4 +197,4 @@ REPORT_ISSUE_URL=https://github.com/bigbluebutton/greenlight/issues/new
 #   open - For open registration
 #   invite - For invite only registration
 #   approval - For approve/decline registration
-DEFAULT_REGISTRATION=open
\ No newline at end of file
+DEFAULT_REGISTRATION=open