Problem with VPN Server on Lion

hi,

i have a problem with lion server and the vpn deamon. i have upgraded from snow leopard client with ivpn. on lion server the vpn deamon run's but the vpn connection cannot be established. if i start the vpn deamon in debug mode i got following output:

ash-3.2# vpnd -x -d -i com.apple.ppp.l2tp

2011-07-26 21:46:42 CEST Server 'com.apple.ppp.l2tp' starting...

2011-07-26 21:46:42 CEST Loading plugin /System/Library/Extensions/L2TP.ppp

2011-07-26 21:46:42 CEST params->daemonize = 0

2011-07-26 21:46:42 CEST params->max_sessions = 128

2011-07-26 21:46:42 CEST params->server_id = com.apple.ppp.l2tp

2011-07-26 21:46:42 CEST params->server_type = PPP

2011-07-26 21:46:42 CEST params->server_subtype = L2TP

2011-07-26 21:46:42 CEST params->lb_enable = 0

2011-07-26 21:46:42 CEST params->plugin_path = L2TP.ppp

2011-07-26 21:46:42 CEST params->log_path = /var/log/ppp/vpnd.log

2011-07-26 21:46:42 CEST params->next_arg_index = 30

2011-07-26 21:46:42 CEST params->exec_args[0] = pppd

2011-07-26 21:46:42 CEST params->exec_args[1] = serverid

2011-07-26 21:46:42 CEST params->exec_args[2] = com.apple.ppp.l2tp

2011-07-26 21:46:42 CEST params->exec_args[3] = nodetach

2011-07-26 21:46:42 CEST params->exec_args[4] = proxyarp

2011-07-26 21:46:42 CEST params->exec_args[5] = plugin

2011-07-26 21:46:42 CEST params->exec_args[6] = L2TP.ppp

2011-07-26 21:46:42 CEST params->exec_args[7] = 192.168.1.100:

2011-07-26 21:46:42 CEST params->exec_args[8] = ms-dns

2011-07-26 21:46:42 CEST params->exec_args[9] = 192.168.4.1

2011-07-26 21:46:42 CEST params->exec_args[10] = debug

2011-07-26 21:46:42 CEST params->exec_args[11] = logfile

2011-07-26 21:46:42 CEST params->exec_args[12] = /var/log/ppp/vpnd.log

2011-07-26 21:46:42 CEST params->exec_args[13] = lcp-echo-interval

2011-07-26 21:46:42 CEST params->exec_args[14] = 60

2011-07-26 21:46:42 CEST params->exec_args[15] = lcp-echo-failure

2011-07-26 21:46:42 CEST params->exec_args[16] = 5

2011-07-26 21:46:42 CEST params->exec_args[17] = mru

2011-07-26 21:46:42 CEST params->exec_args[18] = 1500

2011-07-26 21:46:42 CEST params->exec_args[19] = mtu

2011-07-26 21:46:42 CEST params->exec_args[20] = 1280

2011-07-26 21:46:42 CEST params->exec_args[21] = receive-all

2011-07-26 21:46:42 CEST params->exec_args[22] = ip-src-address-filter

2011-07-26 21:46:42 CEST params->exec_args[23] = 1

2011-07-26 21:46:42 CEST params->exec_args[24] = noccp

2011-07-26 21:46:42 CEST params->exec_args[25] = noacsp

2011-07-26 21:46:42 CEST params->exec_args[26] = intercept-dhcp

2011-07-26 21:46:42 CEST params->exec_args[27] = require-mschap-v2

2011-07-26 21:46:42 CEST params->exec_args[28] = l2tpmode

2011-07-26 21:46:42 CEST params->exec_args[29] = answer

2011-07-26 21:46:42 CEST Listening for connections...

2011-07-26 21:46:50 CEST Incoming call... Address given to client = 192.168.4.195

2011-07-26 21:46:50 CEST --> Client with address = 192.168.4.195 has hungup

2011-07-26 21:46:51 CEST Incoming call... Address given to client = 192.168.4.196

2011-07-26 21:46:51 CEST --> Client with address = 192.168.4.196 has hungup

2011-07-26 21:46:53 CEST Incoming call... Address given to client = 192.168.4.197

2011-07-26 21:46:53 CEST --> Client with address = 192.168.4.197 has hungup

2011-07-26 21:46:57 CEST Incoming call... Address given to client = 192.168.4.198

2011-07-26 21:46:57 CEST --> Client with address = 192.168.4.198 has hungup

2011-07-26 21:47:01 CEST Incoming call... Address given to client = 192.168.4.199

2011-07-26 21:47:01 CEST --> Client with address = 192.168.4.199 has hungup

2011-07-26 21:47:05 CEST Incoming call... Address given to client = 192.168.4.195

2011-07-26 21:47:05 CEST --> Client with address = 192.168.4.195 has hungup

2011-07-26 21:47:09 CEST Incoming call... Address given to client = 192.168.4.196

2011-07-26 21:47:09 CEST --> Client with address = 192.168.4.196 has hungup

have somebody a tip to get the vpn server running.

thank you very much

br

manuel