Bug ID 1003081: GRE/TB-encapsulated fragments are not forwarded.

Last Modified: Jan 20, 2023

Bug Tracker

Affected Product:  See more info
BIG-IP TMOS(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, 14.1.5.2, 14.1.5.3, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 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, 15.1.7, 15.1.8, 15.1.8.1, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3

Opened: Mar 16, 2021
Severity: 4-Minor

Symptoms

IP fragments that arrive over a GRE/TB tunnel are not reassembled, and are not forwarded through the BIG-IP system.

Impact

BIG-IP system fails to process fragmented IP datagrams.

Conditions

This occurs if all of the following conditions are true: -- BIG-IP system with more than one TMM instance running. -- Running a version or Engineering Hotfix that contains a fix for ID997541 (https://cdn.f5.com/product/bugtracker/ID997541.html). -- GRE Round Robin DAG (the DB variable dag.roundrobin.gre) is enabled. -- IP fragments arrive over GRE tunnel.

Workaround

None

Fix Information

None

Behavior Change