Bug ID 435458: The HTTP Explicit Proxy and the SOCKS Proxy do not support AAAA address lookups

Last Modified: Apr 19, 2021

Bug Tracker

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

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 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

Fixed In:
13.1.0

Opened: Oct 26, 2013
Severity: 2-Critical
Related AskF5 Article:
K47553552

Symptoms

The HTTP Explicit Proxy and the SOCKS Proxy do not support IPv6 AAAA DNS lookups. They ar limited to IPv4 DNS records. This will prevent IPv6-only addresses from being resolved.

Impact

The destination will be unreachable.

Conditions

The destination URI resolves to an IPv6-only address.

Workaround

None.

Fix Information

The HTTP Explicit Proxy and the SOCKS proxy are now IPv6 address aware. The default is to attempt to resolve the IPv4 A record first, before trying the AAAA record.

Behavior Change

The HTTP Explicit Proxy and the SOCKS proxy are now IPv6 address aware. The default is to attempt to resolve the IPv4 A record first, before trying the AAAA record.