Bug ID 456376: BIG-IP does not support IPv4-mapped-IPv6 notation in the configuration with prefix length greater than 32

Last Modified: Oct 07, 2023

Affected Product(s):
BIG-IP AFM(all modules)

Known Affected Versions:
11.4.1, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 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, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2, 12.1.3, 12.1.3.1, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:
14.1.0, 13.1.0, 12.1.3.2

Opened: Apr 09, 2014

Severity: 1-Blocking

Related Article: K53153545

Symptoms

The BIG-IP system does not allow IPv4-mapped-IPv6 notation (with prefix length greater than 32) in tmsh or GUI. When trying to add '::ffff:0.0.0.0/96' to an address list or directly to a rule the system posts an error: Error parsing IP address: ::ffff:0.0.0.0/96.

Impact

Cannot successfully specify an IPv4-mapped-IPv6 block to be configured in AFM firewall rule (and possibly other AFM configurations as well).

Conditions

-- IPv4-mapped-IPv6 notation in the configuration. -- Adding prefix length greater than 32.

Workaround

To drop the IPv4-mapped-IPv6 block, enable the following DoS db variable: dos.dropv4mapped.

Fix Information

You can now use tmsh for IPv4-mapped-IPv6 notation with prefix length greater than 32.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips