[Openswan Users] weird l2tp problem

[geert geurts]

Hi all!

ok got a bit further...
below the output of tcpdump -vv host XX.XX.XX.0 and proto 17 to dump all
UDP packet from XX.XX.XX.0 to check if packets actually get in...
20:32:28.881603 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP
(17), length 120)
    85.17.206.174.isakmp > ip0-139-173-82.adsl2.static.versatel.nl.isakmp:
isakmp 1.0 msgid  cookie ->: phase 2/others ? inf[E]: [encrypted hash]
20:32:58.913884 IP (tos 0x0, ttl 57, id 0, offset 0, flags [DF], proto UDP
(17), length 120)
    ip0-139-173-82.adsl2.static.versatel.nl.isakmp > 85.17.206.174.isakmp:
[no cksum] isakmp 1.0 msgid  cookie ->: phase 2/others ? inf[E]: [encrypted
hash]

Then I've check strace of xl2tpd to see how it responds to these packets.
below the output of strace xltpd -D (server-side):
execve("/usr/sbin/xl2tpd", ["xl2tpd", "-D"], [/* 18 vars */]) = 0
brk(0)                                  = 0x1d23000

...(I left out allot of messages concerning xl2tpd startup)

write(2, "xl2tpd[8571]: Listening on IP ad"..., 63xl2tpd[8571]: Listening
on IP address XX.XX.XX.174, port 1701
) = 63
select(5, [3 4], NULL, NULL, NULL

And it stays there...
No output after this, so somehow the packets do endup at the server, but
are not picked up by xl2tpd...
I'm completely stuck here...

Any suggestions are more then welcome!

Thanks!

Regards,
Geert
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