Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4
Fixed In:
11.6.0, 11.5.1 HF5
Opened: Apr 21, 2014 Severity: 3-Major Related Article:
K15624
IPv6 <-> IPv4 tunnel does not pass traffic when MTU is fixed.
Traffic does not flow through tunnel
MTU on tunnel has been set to non-default value.
Do not set custom MTU
ip6ip4 tunnel with fixed MTU passes traffic as expected.