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NAT-PT problem

Blendeman
Level 1
Level 1

Hi,

I have configured NAT-PT communication between an IPv4 and IPv6 site but I'm unable to ping.

If i try to ping, I see the translation on my NAT-PT router but it doesn't works. So, I thought it was a problem with my routing but thats ok: if a set an IPv4 address on my IPv6 site the ping is succesfull.

This icmp error is show:

*Mar 21 11:28:19.547: %IPV6_FORWARDING-3-NULLIDB: Uninitialized interface pointer - ipv6_fib_forw -Process= "Exec", ipl= 0, pid= 3, -Traceback= 0x62153194z 0x61910C98z 0x61C3D874z 0x61C3D9BCz 0x621ED9A4z 0x621EDB5Cz 0x621EDC74z 0x621EDD50z 0x62151E5Cz 0x62153724z 0x6214A818z 0x6217A1ECz 0x6217A8A4z 0x6217AE60z 0x6218CA88z 0x61595C1Cz.

This is NAT-PT config:

ipv6 nat v4v6 source 192.168.40.15 3800::C0A8:280F

ipv6 nat v6v4 source list v6tov4 pool IPv4_pool

ipv6 nat v6v4 pool IPv4_pool 10.10.40.2 10.10.40.254 prefix-length 24

ipv6 nat prefix 3800::/96

ipv6 router rip RIP_Tunneling

!

!

!

!

!

!

!

ipv6 access-list v6tov4

sequence 20 permit ipv6 FD00:1:1:40::/64 any

and NAT is enabled on my interfaces..

Any solution for this problem? Or is it a bug in my ios (c2801-advipservicesk9-mz.124-24.T2.bin)?

Thanks in advance..

1 Reply 1

dario.didio
Level 4
Level 4

Hi,

Looking at your log output, it seems like a traceback ==> chances are it is a software related issue.

I would suggest to upgrade to version 15.X which has far better IPv6 support.

Try upgrading and if the problem persists, we can look deeper into it.

Good luck.

Br,

Dario

Review Cisco Networking for a $25 gift card