ASA IS-IS IPv6 tag BUG

[wbw]

Hi guys,

trying to filter redistributed IS-IS routes into OSPFv3 I'm facing the following weird bug:

Redistribution of IS-IS IPv6 routes does not work at all if I configure a route-map matching IS-IS route tag(s), i.e.

!
route-map ISIStoOSPF deny 10
 match tag 65000
!
route-map ISIStoOSPF permit 20
!

The same configuration works perfectly fine filtering IS-IS IPv4 routes into OSPF.

Furthermore it seems that Cisco ASA IS-IS IPv6 configuration does not recognize any IS-IS tags of IPv6 routes at all:

ASAFW01# show isis ipv6 unicast rib
IS-IS IPv6 process single_vf, local RIB
* 2001:1234:5678:32::/64
    via fe80::963f:c2ff:fe53:abcd/Port-channel1.120, type L2  metric 10 tag 0 LS
...

All other non-ASA IS-IS routers on the same interface are showing the tag #65000 information correctly:

RO11#sh isis ipv6 unicast rib
IS-IS IPv6 process , local RIB
* 2001:1234:5678:32::/64
    via FE80::963F:C2FF:FE53:ABCD/GigabitEthernet0/2, type L2  metric 10 tag 65000 LSP [7/48C]
...

Any hint what's going wrong?

Thanks for your feedback.

-FF