Bug ID 458198: IPv6 <-> IPv4 tunnel does not function when MTU is fixed

Last Modified: Oct 17, 2023

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

Known Affected Versions:
11.6.2 HF1

Fixed In:
11.6.0, 11.5.1 HF5

Opened: Apr 21, 2014

Severity: 3-Major

Related Article: K15624

Symptoms

IPv6 <-> IPv4 tunnel does not pass traffic when MTU is fixed.

Impact

Traffic does not flow through tunnel

Conditions

MTU on tunnel has been set to non-default value.

Workaround

Do not set custom MTU

Fix Information

ip6ip4 tunnel with fixed MTU passes traffic as expected.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips