так, причина найдена. оказалось что виной всему 2 шлюза по умолчанию - PPPOE в инет (НЕ билайн) и WAN в сеть билайна... причём им я не пользуюсь вообще... вот жешь танцы с бобном, действительно...
если интересно, вот [more=лог][02/Oct/2011 14:26:09] {vpntunnel} Tunnel[0002]('bzt') - connection closed by peer
[02/Oct/2011 14:26:09] {vpntunnel} Tunnel[0002]('bzt') - SSL_free ID:10
[02/Oct/2011 14:26:09] {vpntunnel} TUNNEL_STATUS_CHANGE 'bzt' - 0:142
[02/Oct/2011 14:26:09] {vpntunnel} Tunnel[0002]('bzt') - connection deleted in driver
[02/Oct/2011 14:26:09] {vpntunnel} Tunnel[0002]('bzt') - tunnel deregistered
[02/Oct/2011 14:26:09] {vpntunnel} Tunnel[0002]('bzt') - flushing ARP cache for adapter 0x1D, IP 172.18.5.2
[02/Oct/2011 14:26:09] {vpntunnel} Tunnel[0002]('bzt') - tunnel closed
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - connecting to XX.XX.XX.XX:4090
[02/Oct/2011 14:26:10] {vpntunnel} TUNNEL_STATUS_CHANGE 'bzt' - 1:0
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - remote endpoint name resolved - XX.XX.XX.XX
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - local TCP address = YY.YY.YY.YY:55089
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - SSL connection successfully established
[02/Oct/2011 14:26:10] {vpntunnel} TUNNEL_STATUS_CHANGE 'bzt' - 3:0
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - received VERSION message, version = 3
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - sending VERSION message, version = 3
[02/Oct/2011 14:26:10] {vpntunnel} TUNNEL_STATUS_CHANGE 'bzt' - 5:0
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - received IPCONFIG_1 message, offered ip = 172.18.4.3/255.255.255.0
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - tunnel registered
[02/Oct/2011 14:26:10] {vpntunnel} TUNNEL_STATUS_CHANGE 'bzt' - 6:0
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - sending IPCONFIG_2 message, ip = 172.18.5.2/255.255.255.0, err = 0, CEP = 3600 s
[02/Oct/2011 14:26:10] {vpntunnel} TUNNEL_STATUS_CHANGE 'bzt' - 9:0
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - received IPCONFIG_3 message
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - connection added in driver
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - primary cipher added in driver
[02/Oct/2011 14:26:10] {vpntunnel} TUNNEL_STATUS_CHANGE 'bzt' - 10:0
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - driver started sending secret to XX.XX.XX.XX:4090.
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - waiting for SECRET_RECEIVED from XX.XX.XX.XX:4090
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - SECRET_RECEIVED received
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - driver stopped sending secret to XX.XX.XX.XX:4090.
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - route to remote endpoint added, gw = 10.10.72.1 (adapter 0xB) - вот он гад, шлюз левый подсовывал
[02/Oct/2011 14:26:10] {vpntunnel} TUNNEL_STATUS_CHANGE 'bzt' - 20:0
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - used cipher: AES256-SHA
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - received complete command
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - VPN routes changed
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - sending routes
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - sending message ROUTES, 3 routes in the list, flags = SE
[02/Oct/2011 14:26:10] {vpntunnel} Tunnel[0002]('bzt') - no relevant changes in VPN routes, update will not be sent[/more]
Rolisov, спасибо за помощь! я просто не знал где расширенный лог включается