Hello,
I am currently trying to get IPv6 via PPPoe/L2tp running in our lab.
The configuration is as follows:
Cisco878(CPE) <--pppoe--> LAC <--ppp/l2tp--> LNS <--IPv6-->TestHost
LAC is a Cisco7301 12.2(33)SRC1
LNS is a Cisco7301 12.2(33)SRC1
When originanting IPv6 echo-request-packets from the CPE-side towards
the testhost these packets reach the destination. But all ipv6
traffic from the testhost to the CPE gets dropped at the LNS and
counters (RP LES Bad version - whatever this means?) increase:
LNS#show ipv6 cef switching statistics
Reason Drop Punt Punt2Host
RP LES Packet destined for us 0 80 0
RP LES Unsupported 0 2 0
RP LES Bad hop, TTL expired 0 3 0
RP LES Routed to p2p prefix 0 0 40
RP LES MTU exceeded 0 0 8
RP LES Link-local 0 30 0
RP LES Bad version 12246 0 0
RP LES Total 12246 115 48
All Total 12246 115 48
LNS#
When disabling ipv6 cef (no ipv6 cef) ipv6 traffic flow works in both
directions (CPE<->testhost) and counters stop increasing. At all
times (regardless of ipv6 cef en-/disabled) IPv6 communication
directly from the LNS to the CPE works fine.
Any idea if this might be related to CSCsq14261? Unfortunately
disabling IPv6 CEF is no option here as this breaks 6PE.
Regards
Christoph
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