From 3d2521dc65c200321ac50962c7f768369428ccb0 Mon Sep 17 00:00:00 2001
From: Tom Wilkie <tom@weave.works>
Date: Mon, 1 Jun 2015 10:16:26 +0000
Subject: [PATCH] Don't just advertise addresses on eth devices; use hostname
 -I.

---
 scope | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/scope b/scope
index 4333be4c9e..00474a8117 100755
--- a/scope
+++ b/scope
@@ -133,8 +133,11 @@ case "$COMMAND" in
 			$WEAVESCOPE_DOCKER_ARGS $SCOPE_IMAGE $WEAVESCOPE_DNS_ARGS "$@")
 
 		if dns_running; then
-			IP_ADDRS=$(find /sys/class/net -name eth* | xargs -n1 basename | xargs -n1 ip addr show |
-				grep inet | awk '{ print $2 }' | grep -oE "$IP_REGEXP" | xargs echo)
+			IP_ADDRS=$(hostname -I)
+			if [ -z "$IP_ADDRS" ]; then
+				echo "Could not determine local IP address; Weave DNS integration will not work correctly."
+				exit 1
+			fi
 			tell_dns_fqdn PUT $CONTAINER $FQDN $IP_ADDRS
 		fi