Bug ID 573529: F-bit is not set in IPv6 OSPF Type-7 LSAs

Last Modified: May 29, 2024

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

Fixed In:
11.5.4 HF2

Opened: Feb 12, 2016

Severity: 3-Major


The forwarding address and the F-bit are not set in Type-7 LSAs sent out by the ASBR.


ABR routers are not able to propagate NSSA routes to other OSPF areas as External Type-5 routes. As a result, OSPF areas cannot reach external networks.


Virtual IP from a virtual server is redistributed as a Type-7 route by the ASBR.



Fix Information

ASBR sets the F-bit and forwarding address correctly.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips