diff --git a/agent_based/checkpoint_vsx_system.py b/agent_based/checkpoint_vsx_system.py
index ffaec8434f48e5de8f0ee911dc22c14939ee6935..92386e54dedfe7f3e5aa9672e461128711221dfd 100644
--- a/agent_based/checkpoint_vsx_system.py
+++ b/agent_based/checkpoint_vsx_system.py
@@ -20,6 +20,7 @@
 # 2021-09-21: changed graph definition for packets graph to stack
 # 2021-09-24: changed graph definition for connections graph to make it scale with
 #             the active connections (suggested by raulcurro[at]gmail[dot]com)
+#             moved Main IP to details, if it is not an IPv4 address
 #
 # snmpwalk sample
 #
@@ -86,6 +87,7 @@
 # }
 #
 
+import re
 import time
 from dataclasses import dataclass
 from typing import List, Dict, Optional, Tuple
@@ -187,8 +189,12 @@ def check_checkpoint_vsx_system(item, params, section: Dict[str, CheckpointVsx])
         yield Result(state=State(params['state_sic_not_established']), notice='SIC not established')
 
     if vsx.vsxStatusVsType.lower() in ['virtual system', 'vsx gateway']:
+        ipv4 = re.compile('^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}')
         yield Result(state=State.OK, notice=f'System name: {item}')
-        yield Result(state=State.OK, summary=f'Main IP: {vsx.vsxStatusMainIP}')
+        if ipv4.match(vsx.vsxStatusMainIP):
+            yield Result(state=State.OK, summary=f'Main IP: {vsx.vsxStatusMainIP}')
+        else:
+            yield Result(state=State.OK, notice=f'Main IP: {vsx.vsxStatusMainIP}')
         yield Result(state=State.OK, summary=f'VS ID: {vsx.vsxStatusVSId}',
                      details=f'Virtual system ID: {vsx.vsxStatusVSId}')
         yield Result(state=State.OK, notice=f'System type: {vsx.vsxStatusVsType}')
diff --git a/checkpoint_vsx_system.mkp b/checkpoint_vsx_system.mkp
index 006c6c9f50cdbde8c77afe5b78330e910451ce97..881a9b058643bae572bc85d3bf418bb0e53d52cf 100644
Binary files a/checkpoint_vsx_system.mkp and b/checkpoint_vsx_system.mkp differ