IPv6 - PPPOE Login with Cisco 886

[Harald S]

Hi all,

i'm trying to get online with IPv6 with my Cisco 886. But i failed. 
Perhaps you have any hints for me.

My Config:

interface Dialer0
description *** IPv6 ***
no ip address
ip flow ingress
ip virtual-reassembly in
encapsulation ppp
load-interval 30
dialer pool 1
ipv6 address autoconfig default
ipv6 enable
fair-queue
ppp authentication chap callin
ppp chap hostname USERNAME
ppp chap password PASSWORD
ppp pap refuse
no cdp enable


(This config works well with an Cisco 836!)


PPP protocol negotiation debugging tells me:

...
Jan 10 10:26:06.588 CET: Vi2 PPP: Phase is FORWARDING, Attempting 
Forward
Jan 10 10:26:06.588 CET: Vi2 PPP: Queue IPCP code[1] id[1]
Jan 10 10:26:06.588 CET: Vi2 PPP: Queue IPV6CP code[1] id[1]
Jan 10 10:26:06.592 CET: Vi2 PPP: Phase is ESTABLISHING, Finish LCP
Jan 10 10:26:06.592 CET: Vi2 PPP: Phase is UP
Jan 10 10:26:06.592 CET: Vi2 PPP: Process pending ncp packets
Jan 10 10:26:06.592 CET: Vi2 IPCP: Redirect packet to Vi2
Jan 10 10:26:06.592 CET: Vi2 IPCP: I CONFREQ [UNKNOWN] id 1 len 10
Jan 10 10:26:06.592 CET: Vi2 IPCP:    Address 192.168.1.13 
(0x0306D918C00D)
Jan 10 10:26:06.592 CET: Vi2 LCP: O PROTREJ [Open] id 3 len 16 
protocol IPCP (0x0101000C0306D918C00D)
Jan 10 10:26:06.592 CET: Vi2 IPV6CP: Redirect packet to Vi2
Jan 10 10:26:06.592 CET: Vi2 IPV6CP: I CONFREQ [UNKNOWN] id 1 len 14
Jan 10 10:26:06.592 CET: Vi2 IPV6CP:    (0x010A021C0FFFFE38381B)
Jan 10 10:26:06.592 CET: Vi2 LCP: O PROTREJ [Open] id 4 len 20 
protocol IPV6CP (0x01010010010A021C0FFFFE38381B)
Jan 10 10:26:06.596 CET: %LINEPROTO-5-UPDOWN: Line protocol on 
Interface Virtual-Access2, changed state to up
...

What could be the reason for the IPV6CP Reject?

Best regards

Harald

[Laurent Aubert]

HI Harald,

You are receiving an IPv4 address so that's why your router is rejecting it because IPv4 is not configured under the dialer interface.

Based on Feature-Navigator, 886 requires 15.1(4)M to support IPv6 over PPPoE.

HTH

Laurent.

[Harald S]

Hi Laurent,

if i change the dialer interface with "ip address negotiated" the probelm is still existent.

Furthermore i'm still wonding about the same config which is working on Cisco 836.

I'm using: "c880data-universalk9-mz.151-2.T3.bin"

Regards

Harald

[Laurent Aubert]

HI,

I agree "ip address negotiated' will not help you to receive an IPv6 address.

15.1(4)M has been released after 15.1T so please install this version first and see if it helps.

Thanks,

Laurent.