diff -uNr a/heartbeat/IPaddr2 b/heartbeat/IPaddr2
--- a/heartbeat/IPaddr2	2018-06-27 10:29:08.000000000 +0200
+++ b/heartbeat/IPaddr2	2018-06-29 16:01:50.538797379 +0200
@@ -80,6 +80,7 @@
 OCF_RESKEY_arp_bg_default=true
 OCF_RESKEY_run_arping_default=false
 OCF_RESKEY_preferred_lft_default="forever"
+OCF_RESKEY_monitor_retries="1"
 
 : ${OCF_RESKEY_lvs_support=${OCF_RESKEY_lvs_support_default}}
 : ${OCF_RESKEY_lvs_ipv6_addrlabel=${OCF_RESKEY_lvs_ipv6_addrlabel_default}}
@@ -92,6 +93,7 @@
 : ${OCF_RESKEY_arp_bg=${OCF_RESKEY_arp_bg_default}}
 : ${OCF_RESKEY_run_arping=${OCF_RESKEY_run_arping_default}}
 : ${OCF_RESKEY_preferred_lft=${OCF_RESKEY_preferred_lft_default}}
+: ${OCF_RESKEY_monitor_retries=${OCF_RESKEY_monitor_retries_default}}
 #######################################################################
 
 SENDARP=$HA_BIN/send_arp
@@ -368,6 +370,18 @@
 <content type="string" default="${OCF_RESKEY_preferred_lft_default}"/>
 </parameter>
 
+<parameter name="monitor_retries">
+<longdesc lang="en">
+Set number of retries to find interface in monitor-action.
+
+ONLY INCREASE IF THE AGENT HAS ISSUES FINDING YOUR NIC DURING THE
+MONITOR-ACTION. A HIGHER SETTING MAY LEAD TO DELAYS IN DETECTING
+A FAILURE.
+</longdesc>
+<shortdesc lang="en">Number of retries to find interface in monitor-action</shortdesc>
+<content type="string" default="${OCF_RESKEY_monitor_retries_default}"/>
+</parameter>
+
 </parameters>
 <actions>
 <action name="start"   timeout="20s" />
@@ -536,15 +550,26 @@
 find_interface() {
 	local ipaddr="$1"
 	local netmask="$2"
+	local iface=""
 
 	#
 	# List interfaces but exclude FreeS/WAN ipsecN virtual interfaces
 	#
-	local iface="`$IP2UTIL -o -f $FAMILY addr show \
+	for i in $(seq 1 $OCF_RESKEY_monitor_retries); do
+	    iface="`$IP2UTIL -o -f $FAMILY addr show \
 		| grep "\ $ipaddr/$netmask" \
 		| cut -d ' ' -f2 \
 		| grep -v '^ipsec[0-9][0-9]*$'`"
 
+	    if [ -n "$iface" ]; then
+		    break
+	    fi
+
+	    if [ $OCF_RESKEY_monitor_retries -gt 1 ]; then
+		sleep 1
+	    fi
+	done
+
 	echo "$iface"
 	return 0
 }