File 0001-Azure-lb-fails-if-IPv6-disabled.patch of Package resource-agents.34049

From ff657a8f4e5c59b559ac15036332140a32598e0c Mon Sep 17 00:00:00 2001
From: Peter Varkoly <varkoly@suse.com>
Date: Tue, 30 Apr 2024 19:21:09 +0200
Subject: [PATCH] Azure-lb fails if IPv6 disabled Add a new parameter: listen
 This parameter can have following walues: default: Neither -4 nor -6 will be
 used. The default behavior of socat and nc will be used.          socat:
 Listen only on IPv4 addresses          nc: If net.ipv6.bindv6only = 0 =>
 Listen on both IPv4 and IP6 addresses              If net.ipv6.bindv6only = 1
 => Listen only on IPv4 addresses ipv4only: Listen only on IPv4 addresses.
 ipv6enable: Enable TCP6 support.          nc: Listen only on IPv6 adresses
 independent of net.ipv6.bindv6only          socat: If net.ipv6.bindv6only = 0
 => Listen on both IPv4 and IP6 addresses.                 If
 net.ipv6.bindv6only = 1 => Listen only on IPv6 adresses.


diff --git a/heartbeat/azure-lb b/heartbeat/azure-lb
index 198e71c5..64225264 100755
--- a/heartbeat/azure-lb
+++ b/heartbeat/azure-lb
@@ -24,9 +24,13 @@ else
 fi
 
 OCF_RESKEY_port_default="61000"
+OCF_RESKEY_listen_default="default"
+
+[ "$(cat /sys/module/ipv6/parameters/disable)" = "1" ] && OCF_RESKEY_listen_default="ipv4only"
 
 : ${OCF_RESKEY_nc=${OCF_RESKEY_nc_default}}
 : ${OCF_RESKEY_port=${OCF_RESKEY_port_default}}
+: ${OCF_RESKEY_listen=${OCF_RESKEY_listen_default}}
 
 process="$OCF_RESOURCE_INSTANCE"
 pidfile="/var/run/$OCF_RESOURCE_INSTANCE.pid"
@@ -73,6 +77,25 @@ Port to listen to.
 <content type="string" default="${OCF_RESKEY_port_default}"/>
 </parameter>
 
+<parameter name="listen">
+<longdesc lang="en">
+This parameter can have following walues:
+default: Neither -4 nor -6 will be used. The default behavior of socat and nc will be used.
+         socat: Listen only on IPv4 addresses
+         nc: If net.ipv6.bindv6only = 0 => Listen on both IPv4 and IP6 addresses
+             If net.ipv6.bindv6only = 1 => Listen only on IPv4 addresses
+ipv4only: Listen only on IPv4 addresses.
+ipv6enable: Enable TCP6 support.
+         nc: Listen only on IPv6 adresses independent of net.ipv6.bindv6only
+	 socat: If net.ipv6.bindv6only = 0 => Listen on both IPv4 and IP6 addresses.
+                If net.ipv6.bindv6only = 1 => Listen only on IPv6 adresses.
+</longdesc>
+<shortdesc lang="en">Usage of IPv4 and IPv6 addresses.</shortdesc>
+<content type="string" default="${OCF_RESKEY_listen_default}"/>
+</parameter>
+
+
+
 </parameters>
 
 <actions>
@@ -111,10 +134,24 @@ lb_monitor() {
 }
 
 lb_start() {
-	cmd="$OCF_RESKEY_nc -l -k $OCF_RESKEY_port"
-	if [ $( basename $OCF_RESKEY_nc ) = 'socat' ]; then
-		#socat has different parameters
-		cmd="$OCF_RESKEY_nc -U TCP6-LISTEN:$OCF_RESKEY_port,backlog=10,fork,reuseaddr /dev/null"
+	if [ "$( basename $OCF_RESKEY_nc )" = 'socat' ]; then
+		case "${OCF_RESKEY_listen,,}" in
+			ipv4only)
+				cmd="$OCF_RESKEY_nc -4 -U TCP4-LISTEN:$OCF_RESKEY_port,backlog=10,fork,reuseaddr /dev/null" ;;
+			ipv6enable)
+				cmd="$OCF_RESKEY_nc -U TCP6-LISTEN:$OCF_RESKEY_port,backlog=10,fork,reuseaddr /dev/null" ;;
+			*)
+				cmd="$OCF_RESKEY_nc -U TCP-LISTEN:$OCF_RESKEY_port,backlog=10,fork,reuseaddr /dev/null" ;;
+		esac
+	else
+		case "${OCF_RESKEY_listen,,}" in
+			ipv4only)
+				cmd="$OCF_RESKEY_nc -4 -l -k $OCF_RESKEY_port" ;;
+			ipv6enable)
+				cmd="$OCF_RESKEY_nc -6 -l -k $OCF_RESKEY_port" ;;
+			*)
+				cmd="$OCF_RESKEY_nc -l -k $OCF_RESKEY_port" ;;
+		esac
 	fi
 	if ! lb_monitor; then
 		ocf_log debug "Starting $process: $cmd"
-- 
2.35.3