diff --git a/sos/cleaner/parsers/mac_parser.py b/sos/cleaner/parsers/mac_parser.py
index 07704bae4c..909e7719fc 100644
--- a/sos/cleaner/parsers/mac_parser.py
+++ b/sos/cleaner/parsers/mac_parser.py
@@ -21,8 +21,8 @@
 )
 # aabb:ccee:ddee:ffaa
 IPV6_REG_4HEX = (
-    r'((?<!([0-9a-fA-F\'\"]:)|::)(([^:\-]?[0-9a-fA-F]{4}(:|-)){3}'
-    r'[0-9a-fA-F]{4}(\'|\")?(\/|\,|\-|\.|\s|$)))'
+        r'((?<!\w)(([0-9a-fA-F]{4}:){3}[0-9a-fA-F]{4})(?!\w))|'
+        r'((?<!\w)(([0-9a-fA-F]{4}-){3}[0-9a-fA-F]{4})(?!\w))'
 )
 # aa:bb:cc:dd:ee:ff avoiding ipv6 substring matches
 IPV4_REG = (