diff --git a/confluent_osdeploy/el8-diskless/profiles/default/scripts/onboot.sh b/confluent_osdeploy/el8-diskless/profiles/default/scripts/onboot.sh
index 9277284d..3c99ad12 100644
--- a/confluent_osdeploy/el8-diskless/profiles/default/scripts/onboot.sh
+++ b/confluent_osdeploy/el8-diskless/profiles/default/scripts/onboot.sh
@@ -7,7 +7,13 @@
 
 nodename=$(grep ^NODENAME /etc/confluent/confluent.info|awk '{print $2}')
 confluent_apikey=$(cat /etc/confluent/confluent.apikey)
-confluent_mgr=$(grep ^deploy_server: /etc/confluent/confluent.deploycfg|awk '{print $2}')
+v4meth=$(grep ^ipv4_method: /etc/confluent/confluent.deploycfg|awk '{print $2}')
+if [ "$v4meth" = "null" -o -z "$v4meth" ]; then
+    confluent_mgr=$(grep ^deploy_server_v6: /etc/confluent/confluent.deploycfg|awk '{print $2}')
+fi
+if [ -z "$confluent_mgr" ]; then
+    confluent_mgr=$(grep ^deploy_server: /etc/confluent/confluent.deploycfg|awk '{print $2}')
+fi
 confluent_profile=$(grep ^profile: /etc/confluent/confluent.deploycfg|awk '{print $2}')
 timedatectl set-timezone $(grep ^timezone: /etc/confluent/confluent.deploycfg|awk '{print $2}')
 export nodename confluent_mgr confluent_profile
diff --git a/confluent_osdeploy/el9-diskless/profiles/default/scripts/onboot.sh b/confluent_osdeploy/el9-diskless/profiles/default/scripts/onboot.sh
index 9277284d..3c99ad12 100644
--- a/confluent_osdeploy/el9-diskless/profiles/default/scripts/onboot.sh
+++ b/confluent_osdeploy/el9-diskless/profiles/default/scripts/onboot.sh
@@ -7,7 +7,13 @@
 
 nodename=$(grep ^NODENAME /etc/confluent/confluent.info|awk '{print $2}')
 confluent_apikey=$(cat /etc/confluent/confluent.apikey)
-confluent_mgr=$(grep ^deploy_server: /etc/confluent/confluent.deploycfg|awk '{print $2}')
+v4meth=$(grep ^ipv4_method: /etc/confluent/confluent.deploycfg|awk '{print $2}')
+if [ "$v4meth" = "null" -o -z "$v4meth" ]; then
+    confluent_mgr=$(grep ^deploy_server_v6: /etc/confluent/confluent.deploycfg|awk '{print $2}')
+fi
+if [ -z "$confluent_mgr" ]; then
+    confluent_mgr=$(grep ^deploy_server: /etc/confluent/confluent.deploycfg|awk '{print $2}')
+fi
 confluent_profile=$(grep ^profile: /etc/confluent/confluent.deploycfg|awk '{print $2}')
 timedatectl set-timezone $(grep ^timezone: /etc/confluent/confluent.deploycfg|awk '{print $2}')
 export nodename confluent_mgr confluent_profile