From 71dc36a5d34df55c462e032a0e3fbfcfe606de0e Mon Sep 17 00:00:00 2001
From: tmarkwalder <tmark@isc.org>
Date: Fri, 30 Jun 2017 14:22:17 -0400
Subject: [v4_3] Use alias/-alias for ifconfig calls in netbsd & openbsd client
 scripts

    Merges rt31573.
---
 RELNOTES               | 5 +++++
 client/scripts/netbsd  | 4 ++--
 client/scripts/openbsd | 4 ++--
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/RELNOTES b/RELNOTES
index e5634d4f..8a94df3b 100644
--- a/RELNOTES
+++ b/RELNOTES
@@ -205,6 +205,11 @@ by Eric Young (eay@cryptsoft.com).
   includes/minires.h was renamed includes/ns_name.h.
   [ISC-bugs #45471]
 
+- Replaced ifconfig parameters "add" and "delete" with "alias" and "-alias"
+  for IPv6 mode in the client scripts, netbsd and openbsd.  This was
+  preventing IPv6 addresses from being added or removed from interfaces.
+  [ISC-bugs #31573]
+
 			Changes since 4.3.5b1
 
 - Corrected a bug which could cause the server to sporadically crash while
diff --git a/client/scripts/netbsd b/client/scripts/netbsd
index 6a41edf4..07383b78 100755
--- a/client/scripts/netbsd
+++ b/client/scripts/netbsd
@@ -314,7 +314,7 @@ if [ ${reason} = BOUND6 ] ; then
     exit_with_hooks 2;
   fi
 
-  ifconfig ${interface} inet6 add ${new_ip6_address}/${new_ip6_prefixlen}
+  ifconfig ${interface} inet6 alias ${new_ip6_address}/${new_ip6_prefixlen}
 
   # Check for nameserver options.
   make_resolv_conf
@@ -351,7 +351,7 @@ if [ ${reason} = EXPIRE6 -o ${reason} = RELEASE6 -o ${reason} = STOP6 ] ; then
     exit_with_hooks 2;
   fi
 
-  ifconfig ${interface} inet6 delete ${old_ip6_address}/${old_ip6_prefixlen}
+  ifconfig ${interface} inet6 -alias ${old_ip6_address}/${old_ip6_prefixlen}
 
   exit_with_hooks 0
 fi
diff --git a/client/scripts/openbsd b/client/scripts/openbsd
index 151b50aa..e7f4746f 100644
--- a/client/scripts/openbsd
+++ b/client/scripts/openbsd
@@ -308,7 +308,7 @@ if [ ${reason} = BOUND6 ] ; then
     exit_with_hooks 2;
   fi
 
-  ifconfig ${interface} inet6 add ${new_ip6_address}/${new_ip6_prefixlen}
+  ifconfig ${interface} inet6 alias ${new_ip6_address}/${new_ip6_prefixlen}
 
   # Check for nameserver options.
   make_resolv_conf
@@ -345,7 +345,7 @@ if [ ${reason} = EXPIRE6 -o ${reason} = RELEASE6 -o ${reason} = STOP6 ] ; then
     exit_with_hooks 2;
   fi
 
-  ifconfig ${interface} inet6 delete ${old_ip6_address}/${old_ip6_prefixlen}
+  ifconfig ${interface} inet6 -alias ${old_ip6_address}/${old_ip6_prefixlen}
 
   exit_with_hooks 0
 fi
-- 
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