Bug ID 1100721: IPv6 link-local floating self-IP breaks IPv6 query to BIND

Last Modified: Sep 17, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 14.1.4.1, 14.1.4.2, 14.1.4.3, 14.1.4.4, 14.1.4.5, 14.1.4.6, 14.1.5, 14.1.5.1, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 17.0.0, 17.0.0.1

Opened: Apr 20, 2022
Severity: 2-Critical

Symptoms

A IPv6 link-local floating self-IP breaks IPv6 query to BIND.

Impact

DNS requests will get timed out.

Conditions

1. Create a DNS record in BIND. 2. Create an IPv6 floating self-IP (for example, 2002::139) and place it into traffic-group-1. 3. Create an IPv6 DNS listener using the newly created self-IP (2002::139). So far a DNS query should be answered properly by BIND and TMM. 4. Create a dummy IPv6 floating self-IP using a link-local IP (for example, fe80::4ff:0:0:202) and place it into traffic-group-1. Now, the DNS query from outside will be timed out.

Workaround

None

Fix Information

None

Behavior Change