From 028e2d455d7787fc26330abdb15f380e1c4572a4 Mon Sep 17 00:00:00 2001
From: toby <toby@wit.com>
Date: Sun, 9 Sep 2018 23:11:54 +0200
Subject: [PATCH] fixing bug in IPv6 LOOPBACK, pulling that from DNS as well,
 ASN is still generated for now

---
 debian/wit-network-config.postinst | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/debian/wit-network-config.postinst b/debian/wit-network-config.postinst
index b68eeda..3383496 100755
--- a/debian/wit-network-config.postinst
+++ b/debian/wit-network-config.postinst
@@ -26,16 +26,17 @@ case "$1" in
 
         #source /etc/wit-net.conf
  	export DOMAINNAME=${HOSTNAME#*.}
-	export LOOPBACKv4=$(dig +short ${HOSTNAME%%.*}.loopback.${HOSTNAME#*.})
+	export LOOPBACKv4=$(dig a +short ${HOSTNAME%%.*}.loopback.${HOSTNAME#*.})
+	export LOOPBACKv6=$(dig aaaa +short ${HOSTNAME%%.*}.loopback.${HOSTNAME#*.})
 	export TIER_ID=$(echo $LOOPBACKv4 | cut -d . -f 3)
 	export NODE_ID=$(echo $LOOPBACKv4 | cut -d . -f 4)
 
-	if [ -z $LOOPBACKv4 ]; then
-	    echo "unable to find my LOOPBACK IP"
+	if [ -z $LOOPBACKv4 ] || [ -z $LOOPaBACKv6 ]; then
+	    echo "unable to find my LOOPBACK IP: $LOOPBACKv4/$LOOPaBACKv6"
 	    exit 2
         fi
-        if [ -z "$TIER_ID" ]; then
-            echo "Unable to autodetect TIER_ID, looks like we deal with a special node, please set in environment"
+        if [ -z "$TIER_ID" ] || [ -z "$NODE_ID" ]; then
+            echo "Unable to autodetect TIER/NODE_ID: $TIER_ID/$NODE_ID"
             exit 2
         fi
         if [ -z "$DOMAINNAME" ]; then
@@ -45,7 +46,6 @@ case "$1" in
 
 
         export NODE_ASN="4200$(printf "%03d" $TIER_ID)$(printf "%03d" $NODE_ID)"
-	export LOOPBACKv6="2604:bbc0::$TIER_ID:$NODE_ID"
 
         MGMT_MAC=$(ip -br link show dev $(ip -4 -br addr | grep 10.0. | awk '{ print $1 }') | awk '{ print $3 }')