Last Modified: Aug 19, 2026
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.6.1, 11.6.1 hf1, 11.6.1 hf2, 11.6.2, 11.6.2 hf1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.0.0, 12.0.0 hf1, 12.0.0 hf2, 12.0.0 hf3, 12.0.0 hf4, 12.1.1, 12.1.1 hf1, 12.1.1 hf2, 12.1.2, 12.1.2 hf1, 12.1.2 hf2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6, 13.0.0, 13.0.0 hf1, 13.0.0 hf2, 13.0.0 hf3, 13.0.1
Fixed In:
13.1.0
Opened: Dec 14, 2016 Severity: 3-Major
IPv6 addr can't be deleted; not able to add ports to addr in a data-group using the GUI. System posts an error similar to the following: err mcpd[31438]: 01070378:3: The requested data group IP member network address (10.10.12.184) does match the netmask (ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff).
Get error with unrelated IPv4 address.
Modify IPv6 data-group in the GUI on the Local Traffic :: iRules :: Data Group List.
Use tmsh to delete data group IP addresses in an iRules data group.
You can now add/remove/edit IPv6 and IPv4 within an existing iRules data group.