cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
4795
Views
0
Helpful
1
Replies
Beginner

Problems getting an ipv6 address though PPPoE

cisco877 ----------------------Alcatel ASAM -------------------------- Cisco1941 Router      

"PPPoe"            |                                              |          

                       DSL                               GigE interface Vlan 998

                   

Hi all,                

I want to connect a Cisco 877 using “PPPoE” to a 1941 router and get an Ipv6 address. When I use a Ipv4 address on my connection I am able to authenticate and get a “192.168.0.7” Ipv4 address successfully, but when I remove the Ip4 address 192.168.0.7 and try to connect to the router using an IPV6 address I am not getting and IPv6 Address by DHCP, even If I manually assign an Ipv6 address to my modem on my 1941 it does not shows that Ipv6 address is being used by CE2 user. I am able to authenticate but I am not being assign an Ipv6 address. Attached are the configuration for my 1941 and 877, any help is highly appreciated.

Thanks,

Danny Itza

This is the “ ipv4” address i am getting after I authenticate successfully

IPv6_3845-DsRTR#show users

Interface   User               Mode         Idle      Peer Address

Vi4         CE2               PPPoE       00:00:00  192.168.0.7

This is the result when I try to connect using an "IPv6 address" I am not being assign an IPv6 address

IPv6_3845-DsRTR#show users

Interface   User              Mode         Idle     Peer Address

Vi4         CE2               PPPoE       00:00:00

Below are the results I get when I run a “ debug ppp negotiation” and “debug dhcp detail”

Results when I try the PPPoE connection using Ipv4 address, I am able to get and IPv4 address 192.168.0.3 successfully.

*Jul 27 22:22:29.126: PPP: Alloc Context [30A8D590]

*Jul 27 22:22:29.126: ppp35 PPP: Phase is ESTABLISHING

*Jul 27 22:22:29.126: ppp35 PPP: Using vpn set call direction

*Jul 27 22:22:29.126: ppp35 PPP: Treating connection as a callin

*Jul 27 22:22:29.126: ppp35 PPP: Session handle[6F000023] Session id[35]

*Jul 27 22:22:29.130: ppp35 LCP: Event[OPEN] State[Initial to Starting]

*Jul 27 22:22:29.130: ppp35 PPP LCP: Enter passive mode, state[Stopped]

*Jul 27 22:22:29.146: ppp35 LCP: I CONFREQ [Stopped

IPv6_1941-DsRTR#] id 0 len 21

*Jul 27 22:22:29.146: ppp35 LCP:   MRU 1480 (0x010405C8)

*Jul 27 22:22:29.146: ppp35 LCP:   MagicNumber 0x25533EFD (0x050625533EFD)

*Jul 27 22:22:29.146: ppp35 LCP:   PFC (0x0702)

*Jul 27 22:22:29.146: ppp35 LCP:   ACFC (0x0802)

*Jul 27 22:22:29.146: ppp35 LCP:   Callback 6 (0x0D0306)

*Jul 27 22:22:29.146: ppp35 LCP: O CONFREQ [Stopped] id 1 len 18

*Jul 27 22:22:29.146: ppp35 LCP:   MRU 1492 (0x010405D4)

*Jul 27 22:22:29.146: ppp35 LCP:   AuthProto PAP (0x0304C023)

*Jul 27 22:

IPv6_1941-DsRTR#22:29.146: ppp35 LCP:   MagicNumber 0x7363B073 (0x05067363B073)

*Jul 27 22:22:29.146: ppp35 LCP: O CONFREJ [Stopped] id 0 len 7

*Jul 27 22:22:29.146: ppp35 LCP:   Callback 6 (0x0D0306)

*Jul 27 22:22:29.146: ppp35 LCP: Event[Receive ConfReq-] State[Stopped to REQsent]

*Jul 27 22:22:29.146: ppp35 LCP: I CONFACK [REQsent] id 1 len 18

*Jul 27 22:22:29.146: ppp35 LCP:   MRU 1492 (0x010405D4)

*Jul 27 22:22:29.146: ppp35 LCP:   AuthProto PAP (0x0304C023)

*Jul 27 22:22:29.146: ppp35 LCP:   MagicNumber

IPv6_1941-DsRTR#0x7363B073 (0x05067363B073)

*Jul 27 22:22:29.146: ppp35 LCP: Event[Receive ConfAck] State[REQsent to ACKrcvd]

*Jul 27 22:22:29.146: ppp35 LCP: I CONFREQ [ACKrcvd] id 1 len 18

*Jul 27 22:22:29.146: ppp35 LCP:   MRU 1480 (0x010405C8)

*Jul 27 22:22:29.146: ppp35 LCP:   MagicNumber 0x25533EFD (0x050625533EFD)

*Jul 27 22:22:29.146: ppp35 LCP:   PFC (0x0702)

*Jul 27 22:22:29.146: ppp35 LCP:   ACFC (0x0802)

*Jul 27 22:22:29.146: ppp35 LCP: O CONFACK [ACKrcvd] id 1 len 18

*Jul 27 22:22:29.146: ppp35 LC

IPv6_1941-DsRTR#P:   MRU 1480 (0x010405C8)

*Jul 27 22:22:29.146: ppp35 LCP:   MagicNumber 0x25533EFD (0x050625533EFD)

*Jul 27 22:22:29.146: ppp35 LCP:   PFC (0x0702)

*Jul 27 22:22:29.146: ppp35 LCP:   ACFC (0x0802)

*Jul 27 22:22:29.146: ppp35 LCP: Event[Receive ConfReq+] State[ACKrcvd to Open]

*Jul 27 22:22:29.146: ppp35 LCP: I IDENTIFY [Open] id 2 len 18 magic 0x25533EFDMSRASV5.20

*Jul 27 22:22:29.146: ppp35 LCP: I IDENTIFY [Open] id 3 len 25 magic 0x25533EFDMSRAS-0-BTLLT0163

*Jul 27 22:22:29.146: ppp35 LCP: I

IPv6_1941-DsRTR# IDENTIFY [Open] id 4 len 24 magic 0x25533EFDZZA_QO=E?N+&DaoQ

*Jul 27 22:22:29.150: ppp35 PPP: Queue PAP code[1] id[14]

*Jul 27 22:22:29.166: ppp35 PPP: Phase is AUTHENTICATING, by this end

*Jul 27 22:22:29.166: ppp35 PAP: Redirect packet to ppp35

*Jul 27 22:22:29.166: ppp35 PAP: I AUTH-REQ id 14 len 15 from "CE2"

*Jul 27 22:22:29.166: ppp35 PAP: Authenticating peer CE2

*Jul 27 22:22:29.166: ppp35 PPP: Phase is FORWARDING, Attempting Forward

*Jul 27 22:22:29.166: ppp35 LCP: State is Open

*Jul 27 22

IPv6_1941-DsRTR#:22:29.166: ppp35 PPP: Phase is AUTHENTICATING, Unauthenticated User

*Jul 27 22:22:29.166: ppp35 PPP: Phase is FORWARDING, Attempting Forward

*Jul 27 22:22:29.170: Vi1.1 PPP: Phase is AUTHENTICATING, Authenticated User

*Jul 27 22:22:29.170: Vi1.1 PAP: O AUTH-ACK id 14 len 5

*Jul 27 22:22:29.170: Vi1.1 PPP: Reducing MTU to peer's MRU

*Jul 27 22:22:29.170: Vi1.1 PPP: Phase is UP

*Jul 27 22:22:29.170: Vi1.1 IPCP: Protocol configured, start CP. state[Initial]

*Jul 27 22:22:29.170: Vi1.1 IPCP: Event[OPEN

IPv6_1941-DsRTR#] State[Initial to Starting]

*Jul 27 22:22:29.170: Vi1.1 IPCP: O CONFREQ [Starting] id 1 len 10

*Jul 27 22:22:29.170: Vi1.1 IPCP:   Address 192.168.0.1 (0x0306C0A80001)

*Jul 27 22:22:29.174: Vi1.1 IPCP: Event[UP] State[Starting to REQsent]

*Jul 27 22:22:29.174: Vi1.1 IPV6CP: Protocol configured, start CP. state[Initial]

*Jul 27 22:22:29.174: Vi1.1 IPV6CP: Event[OPEN] State[Initial to Starting]

*Jul 27 22:22:29.174: Vi1.1 IPV6CP: O CONFREQ [Starting] id 1 len 14

*Jul 27 22:22:29.174: Vi1.1 IPV6CP:

IPv6_1941-DsRTR# Interface-Id C671:FEFF:FEC4:4240 (0x010AC671FEFFFEC44240)

*Jul 27 22:22:29.174: Vi1.1 IPV6CP: Event[UP] State[Starting to REQsent]

*Jul 27 22:22:29.174: Vi1.1 IPCP: I CONFREQ [REQsent] id 5 len 34

*Jul 27 22:22:29.174: Vi1.1 IPCP:   Address 0.0.0.0 (0x030600000000)

*Jul 27 22:22:29.174: Vi1.1 IPCP:   PrimaryDNS 0.0.0.0 (0x810600000000)

*Jul 27 22:22:29.174: Vi1.1 IPCP:   PrimaryWINS 0.0.0.0 (0x820600000000)

*Jul 27 22:22:29.174: Vi1.1 IPCP:   SecondaryDNS 0.0.0.0 (0x830600000000)

*Jul 27 22:22

IPv6_1941-DsRTR#:29.174: Vi1.1 IPCP:   SecondaryWINS 0.0.0.0 (0x840600000000)

*Jul 27 22:22:29.174: Vi1.1 IPCP AUTHOR: Done. Her address 0.0.0.0, we want 0.0.0.0

*Jul 27 22:22:29.174: Vi1.1 IPCP: Stalled on pool request

*Jul 27 22:22:29.174: Vi1.1 IPCP: CP stalled on event[IPCP Allocate Address]

*Jul 27 22:22:29.174: Vi1.1 IPCP: Stalled on option [Address]

*Jul 27 22:22:29.174: Vi1.1 IPCP: I CONFACK [REQsent] id 1 len 10

*Jul 27 22:22:29.174: Vi1.1 IPCP:   Address 192.168.0.1 (0x0306C0A80001)

*Jul 27 22:22:29.174

IPv6_1941-DsRTR#: Vi1.1 IPCP: Event[Receive ConfAck] State[REQsent to ACKrcvd]

*Jul 27 22:22:29.174: Vi1.1 LCP: I PROTREJ [Open] id 6 len 20 protocol IPV6CP (0x0101000E010AC671FEFFFEC44240)

*Jul 27 22:22:29.174: Vi1.1 IPV6CP: Event[Receive CodeRej-] State[REQsent to Stopped]

*Jul 27 22:22:31.158: Vi1.1 IPCP: I CONFREQ [ACKrcvd] id 7 len 34

*Jul 27 22:22:31.158: Vi1.1 IPCP:   Address 0.0.0.0 (0x030600000000)

*Jul 27 22:22:31.158: Vi1.1 IPCP:   PrimaryDNS 0.0.0.0 (0x810600000000)

*Jul 27 22:22:31.158: Vi1.1 IPCP:  

IPv6_1941-DsRTR# PrimaryWINS 0.0.0.0 (0x820600000000)

*Jul 27 22:22:31.158: Vi1.1 IPCP:   SecondaryDNS 0.0.0.0 (0x830600000000)

*Jul 27 22:22:31.158: Vi1.1 IPCP:   SecondaryWINS 0.0.0.0 (0x840600000000)

*Jul 27 22:22:31.158: Vi1.1 IPCP: Update stall packet id [5] to [7]

*Jul 27 22:22:31.174: PPP/IPAM: ipam_ipcp_cbf: ctx=6F000023 id=2F ans=0 d=0

*Jul 27 22:22:31.174: Vi1.1 IPCP: CP unstall

*Jul 27 22:22:31.174: Vi1.1 IPCP: Continue processing stalled packet:

*Jul 27 22:22:31.174: Vi1.1 IPCP: I CONFREQ [ACKrcvd] id

IPv6_1941-DsRTR# 7 len 34

*Jul 27 22:22:31.174: Vi1.1 IPCP:   Address 0.0.0.0 (0x030600000000)

*Jul 27 22:22:31.174: Vi1.1 IPCP:   PrimaryDNS 0.0.0.0 (0x810600000000)

*Jul 27 22:22:31.174: Vi1.1 IPCP:   PrimaryWINS 0.0.0.0 (0x820600000000)

*Jul 27 22:22:31.174: Vi1.1 IPCP:   SecondaryDNS 0.0.0.0 (0x830600000000)

*Jul 27 22:22:31.174: Vi1.1 IPCP:   SecondaryWINS 0.0.0.0 (0x840600000000)

*Jul 27 22:22:31.174: Vi1.1 PPP/IPAM: ipcp_req_addr: s_data=1A00000F r=0 a=0 ans=0

*Jul 27 22:22:31.174: Vi1.1 IPCP AUTHOR: Do

IPv6_1941-DsRTR#ne. Her address 0.0.0.0, we want 0.0.0.0

*Jul 27 22:22:31.174: Vi1.1 IPCP: Pool returned 192.168.0.3

*Jul 27 22:22:31.174: DHCP: look up prim DNS for Vi1.1 from any any ret: fail

*Jul 27 22:22:31.174: DHCP: look up prim NBNS for Vi1.1 from any any ret: fail

*Jul 27 22:22:31.174: DHCP: look up sec DNS for Vi1.1 from any any ret: fail

*Jul 27 22:22:31.174: DHCP: look up sec NBNS for Vi1.1 from any any ret: fail

*Jul 27 22:22:31.174: Vi1.1 IPCP: O CONFREJ [ACKrcvd] id 7 len 28

*Jul 27 22:22:31.174: Vi1

IPv6_1941-DsRTR#.1 IPCP:   PrimaryDNS 0.0.0.0 (0x810600000000)

*Jul 27 22:22:31.174: Vi1.1 IPCP:   PrimaryWINS 0.0.0.0 (0x820600000000)

*Jul 27 22:22:31.174: Vi1.1 IPCP:   SecondaryDNS 0.0.0.0 (0x830600000000)

*Jul 27 22:22:31.174: Vi1.1 IPCP:   SecondaryWINS 0.0.0.0 (0x840600000000)

*Jul 27 22:22:31.174: Vi1.1 IPCP: Event[Receive ConfReq-] State[ACKrcvd to ACKrcvd]

*Jul 27 22:22:31.174: Vi1.1 IPCP: I CONFREQ [ACKrcvd] id 8 len 10

*Jul 27 22:22:31.174: Vi1.1 IPCP:   Address 0.0.0.0 (0x030600000000)

*Jul 27 22:

IPv6_1941-DsRTR#22:31.174: Vi1.1 PPP/IPAM: ipcp_req_addr: s_data=0 r=0 a=0 ans=0

*Jul 27 22:22:31.174: Vi1.1 IPCP: O CONFNAK [ACKrcvd] id 8 len 10

*Jul 27 22:22:31.174: Vi1.1 IPCP:   Address 192.168.0.3 (0x0306C0A80003)

*Jul 27 22:22:31.174: Vi1.1 IPCP: Event[Receive ConfReq-] State[ACKrcvd to ACKrcvd]

*Jul 27 22:22:31.174: Vi1.1 IPCP: I CONFREQ [ACKrcvd] id 9 len 10

*Jul 27 22:22:31.174: Vi1.1 IPCP:   Address 192.168.0.3 (0x0306C0A80003)

IPv6_1941-DsRTR#.174: Vi1.1 PPP/IPAM: ipcp_req_addr: s_data=0 r=0 a=0 ans=0

*Jul 27 22:22:31.174: Vi1.1 IPCP: O CONFACK [ACKrcvd] id 9 len 10

*Jul 27 22:22:31.174: Vi1.1 IPCP:   Address 192.168.0.3 (0x0306C0A80003)

*Jul 27 22:22:31.174: Vi1.1 IPCP: Event[Receive ConfReq+] State[ACKrcvd to Open]

*Jul 27 22:22:31.182: Vi1.1 IPCP: State is Open

*Jul 27 22:22:31.182: Vi1.1 IPCP: Install route to 192.168.0.3     “ I am getting this IPv4 address”

Results when I try to get an Ipv6 address,” I am not being assigned an IPv6 address”

IPv6_1941-DsRTR#

IPv6_1941-DsRTR#

*Jul 27 22:24:05.086: PPP: Alloc Context [30A8D590]

*Jul 27 22:24:05.086: ppp36 PPP: Phase is ESTABLISHING

*Jul 27 22:24:05.086: ppp36 PPP: Using vpn set call direction

*Jul 27 22:24:05.086: ppp36 PPP: Treating connection as a callin

*Jul 27 22:24:05.086: ppp36 PPP: Session handle[89000024] Session id[36]

*Jul 27 22:24:05.086: ppp36 LCP: Event[OPEN] State[Initial to Starting]

*Jul 27 22:24:05.086: ppp36 PPP LCP: Enter passive mode, state[Stopped]

*Jul 27 22:24:05.102: ppp36 LCP: I CONFREQ [Stopped

IPv6_1941-DsRTR#] id 0 len 21

*Jul 27 22:24:05.102: ppp36 LCP:   MRU 1480 (0x010405C8)

*Jul 27 22:24:05.102: ppp36 LCP:   MagicNumber 0x6D5A4400 (0x05066D5A4400)

*Jul 27 22:24:05.102: ppp36 LCP:   PFC (0x0702)

*Jul 27 22:24:05.102: ppp36 LCP:   ACFC (0x0802)

*Jul 27 22:24:05.102: ppp36 LCP:   Callback 6 (0x0D0306)

*Jul 27 22:24:05.102: ppp36 LCP: O CONFREQ [Stopped] id 1 len 18

*Jul 27 22:24:05.102: ppp36 LCP:   MRU 1492 (0x010405D4)

*Jul 27 22:24:05.102: ppp36 LCP:   AuthProto PAP (0x0304C023)

*Jul 27 22:

IPv6_1941-DsRTR#24:05.102: ppp36 LCP:   MagicNumber 0x73652748 (0x050673652748)

*Jul 27 22:24:05.102: ppp36 LCP: O CONFREJ [Stopped] id 0 len 7

*Jul 27 22:24:05.102: ppp36 LCP:   Callback 6 (0x0D0306)

*Jul 27 22:24:05.102: ppp36 LCP: Event[Receive ConfReq-] State[Stopped to REQsent]

*Jul 27 22:24:05.102: ppp36 LCP: I CONFACK [REQsent] id 1 len 18

*Jul 27 22:24:05.102: ppp36 LCP:   MRU 1492 (0x010405D4)

*Jul 27 22:24:05.102: ppp36 LCP:   AuthProto PAP (0x0304C023)

*Jul 27 22:24:05.102: ppp36 LCP:   MagicNumber

IPv6_1941-DsRTR#0x73652748 (0x050673652748)

*Jul 27 22:24:05.102: ppp36 LCP: Event[Receive ConfAck] State[REQsent to ACKrcvd]

*Jul 27 22:24:05.102: ppp36 LCP: I CONFREQ [ACKrcvd] id 1 len 18

*Jul 27 22:24:05.102: ppp36 LCP:   MRU 1480 (0x010405C8)

*Jul 27 22:24:05.102: ppp36 LCP:   MagicNumber 0x6D5A4400 (0x05066D5A4400)

*Jul 27 22:24:05.102: ppp36 LCP:   PFC (0x0702)

*Jul 27 22:24:05.102: ppp36 LCP:   ACFC (0x0802)

*Jul 27 22:24:05.102: ppp36 LCP: O CONFACK [ACKrcvd] id 1 len 18

*Jul 27 22:24:05.102: ppp36 LC

IPv6_1941-DsRTR#P:   MRU 1480 (0x010405C8)

*Jul 27 22:24:05.102: ppp36 LCP:   MagicNumber 0x6D5A4400 (0x05066D5A4400)

*Jul 27 22:24:05.102: ppp36 LCP:   PFC (0x0702)

*Jul 27 22:24:05.102: ppp36 LCP:   ACFC (0x0802)

*Jul 27 22:24:05.102: ppp36 LCP: Event[Receive ConfReq+] State[ACKrcvd to Open]

*Jul 27 22:24:05.102: ppp36 LCP: I IDENTIFY [Open] id 2 len 18 magic 0x6D5A4400MSRASV5.20

*Jul 27 22:24:05.102: ppp36 LCP: I IDENTIFY [Open] id 3 len 25 magic 0x6D5A4400MSRAS-0-BTLLT0163

*Jul 27 22:24:05.102: ppp36 LCP: I

IPv6_1941-DsRTR# IDENTIFY [Open] id 4 len 24 magic 0x6D5A4400\K37@|FC^c#R\@.R

*Jul 27 22:24:05.106: ppp36 PPP: Queue PAP code[1] id[15]

*Jul 27 22:24:05.134: ppp36 PPP: Phase is AUTHENTICATING, by this end

*Jul 27 22:24:05.134: ppp36 PAP: Redirect packet to ppp36

*Jul 27 22:24:05.134: ppp36 PAP: I AUTH-REQ id 15 len 15 from "CE2"

*Jul 27 22:24:05.134: ppp36 PAP: Authenticating peer CE2

*Jul 27 22:24:05.134: ppp36 PPP: Phase is FORWARDING, Attempting Forward

*Jul 27 22:24:05.134: ppp36 LCP: State is Open

*Jul 27 22

IPv6_1941-DsRTR#:24:05.134: ppp36 PPP: Phase is AUTHENTICATING, Unauthenticated User

*Jul 27 22:24:05.134: ppp36 PPP: Phase is FORWARDING, Attempting Forward

*Jul 27 22:24:05.138: Vi1.1 PPP: Phase is AUTHENTICATING, Authenticated User

*Jul 27 22:24:05.138: Vi1.1 PAP: O AUTH-ACK id 15 len 5

*Jul 27 22:24:05.138: Vi1.1 PPP: Reducing MTU to peer's MRU

*Jul 27 22:24:05.138: Vi1.1 PPP: Phase is UP

*Jul 27 22:24:05.138: Vi1.1 IPCP: Protocol configured, start CP. state[Initial]

*Jul 27 22:24:05.138: Vi1.1 IPCP: Event[OPEN

IPv6_1941-DsRTR#] State[Initial to Starting]

*Jul 27 22:24:05.138: Vi1.1 IPCP: O CONFREQ [Starting] id 1 len 10

*Jul 27 22:24:05.138: Vi1.1 IPCP:   Address 192.168.0.1 (0x0306C0A80001)

*Jul 27 22:24:05.142: Vi1.1 IPCP: Event[UP] State[Starting to REQsent]

*Jul 27 22:24:05.142: Vi1.1 IPV6CP: Protocol configured, start CP. state[Initial]

*Jul 27 22:24:05.142: Vi1.1 IPV6CP: Event[OPEN] State[Initial to Starting]

*Jul 27 22:24:05.142: Vi1.1 IPV6CP: O CONFREQ [Starting] id 1 len 14

*Jul 27 22:24:05.142: Vi1.1 IPV6CP:

IPv6_1941-DsRTR# Interface-Id C671:FEFF:FEC4:4240 (0x010AC671FEFFFEC44240)

*Jul 27 22:24:05.142: Vi1.1 IPV6CP: Event[UP] State[Starting to REQsent]

*Jul 27 22:24:05.142: Vi1.1 IPV6CP: I CONFREQ [REQsent] id 5 len 14

*Jul 27 22:24:05.142: Vi1.1 IPV6CP:   Interface-Id 0000:0000:0000:0007 (0x010A0000000000000007)

*Jul 27 22:24:05.142: Vi1.1 IPV6CP: O CONFACK [REQsent] id 5 len 14

*Jul 27 22:24:05.142: Vi1.1 IPV6CP:   Interface-Id 0000:0000:0000:0007 (0x010A0000000000000007)

*Jul 27 22:24:05.142: Vi1.1 IPV6CP: Event[

IPv6_1941-DsRTR#Receive ConfReq+] State[REQsent to ACKsent]

*Jul 27 22:24:05.142: Vi1.1 LCP: I PROTREJ [Open] id 6 len 16 protocol IPCP (0x0101000A0306C0A80001)

*Jul 27 22:24:05.142: Vi1.1 IPCP: Event[Receive CodeRej-] State[REQsent to Stopped]

*Jul 27 22:24:05.142: Vi1.1 IPV6CP: I CONFACK [ACKsent] id 1 len 14

*Jul 27 22:24:05.142: Vi1.1 IPV6CP:   Interface-Id C671:FEFF:FEC4:4240 (0x010AC671FEFFFEC44240)

*Jul 27 22:24:05.142: Vi1.1 IPV6CP: Event[Receive ConfAck] State[ACKsent to Open]

*Jul 27 22:24:05.166: Vi1.1 I

IPv6_1941-DsRTR#PV6CP: State is Open

Everyone's tags (4)
1 REPLY 1
Highlighted
Cisco Employee

Problems getting an ipv6 address though PPPoE

Which IOS version and license level do you have on each device?  Do they both have PPPoA IPv6 support?