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From 8ecfa95fff384ed047fd804016abdbbdcdd96d27 Mon Sep 17 00:00:00 2001
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From: Keisuke MORI <kskmori@intellilink.co.jp>
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Date: Wed, 11 Sep 2019 15:33:37 +0900
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Subject: [PATCH] Low: IPaddr2: fix to work properly with unsanitized IPv6
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addresses
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`ip route get` shows the sanitized address at $1 or $2 depending on
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the address is already assigned to the node or not.
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```
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[root@centos73-1 ~]# /sbin/ip route get 2001:db8:101::0001
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2001:db8:101::1 dev eth1 proto ra src 2001:db8:101:0:XXXX:XXXX:XXXX:XXXX metric 100
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[root@centos73-1 ~]# /sbin/ip addr add 2001:db8:101::0001/64 dev eth1
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[root@centos73-1 ~]# /sbin/ip route get 2001:db8:101::0001
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local 2001:db8:101::1 dev lo table local proto none src 2001:db8:101::1 metric 0
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```
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It can not be sanitized if the address is unreachable and on the recent distributions
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(probably depending on the iproute package version)
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```
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[root@centos73-1 ~]# /sbin/ip route get 2001:db8:201::0001
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unreachable 2001:db8:201::1 dev lo table unspec proto kernel src 2001:db8:101:0:XXXX:XXXX:XXXX:XXXX metric 429496
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```
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```
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[root@rhel80-1 ~]# /sbin/ip route get 200:db8:201::0001
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RTNETLINK answers: Network is unreachable
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```
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---
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heartbeat/IPaddr2 | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/heartbeat/IPaddr2 b/heartbeat/IPaddr2
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index 041ace3a2..4f28ddab6 100755
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--- a/heartbeat/IPaddr2
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+++ b/heartbeat/IPaddr2
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@@ -477,6 +477,12 @@ ip_init() {
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fi
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else
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FAMILY=inet6
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+ # address sanitization defined in RFC5952
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+ SANITIZED_IP=$($IP2UTIL route get $OCF_RESKEY_ip | awk '$1~/:/ {print $1} $2~/:/ {print $2}')
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+ if [ -n "$SANITIZED_IP" ]; then
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+ OCF_RESKEY_ip="$SANITIZED_IP"
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+ fi
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+
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if ocf_is_true $OCF_RESKEY_lvs_support ;then
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ocf_exit_reason "The IPv6 does not support lvs_support"
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exit $OCF_ERR_CONFIGURED
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