Bug ID 600812: IPv6 virtual address with icmp-echo is enabled on a IPv6 Host IP forwarding ignores the neighbor advertisement packet.

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.2.1, 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, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:
13.1.0, 12.1.3.7

Opened: Jun 22, 2016

Severity: 3-Major

Symptoms

tmsh show net ndp shows an incomplete entry for the neighbor

Impact

The neighbor advertisement reaches the LTM, but the ndp entry for that neighbor is left incomplete, leading to not being able to connect to that neighbor.

Conditions

icmp-echo is enabled for an IPv6 virtual address on a IPv6 Host IP forwarding virtual server.

Workaround

This issue can be resolved by disabling the icmp-echo on the virtual IPv6 address or configuring a static mac-address for the neighbor

Fix Information

The neighbor entry in the LTM displays the correct neighbor information.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips