Bug ID 772129: Client to server traffic dropped when enabling automatic (remote-address any) 6to4 tunnel

Last Modified: Jan 20, 2023

Bug Tracker

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

Known Affected Versions:
14.0.0,,,,,, 14.0.1,, 14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,,,,, 14.1.5,,,

Opened: Apr 12, 2019
Severity: 3-Major


Traffic from client to server fails destination mapping and is getting dropped with port exhaustion logs: -- crit tmm5[21240]: 01010201:2: Inet port exhaustion on 2a0a:1e01:101:112::11 to 2002:ab0:2002:1:250:56ff:febd:9f0.128 (proto 58)


Traffic from client to server fails destination mapping.


Configuring 6to4 tunnel remote-address to 'any'.


You can use either of the following workarounds: -- Re-configure the tunnel to use static remote address (enables traffic to be passed in both directions). -- Use 6rd with 2002::/16 prefix.

Fix Information


Behavior Change