[Vtun-Users] problems with some webpages begind tun.

[grindej <gr...@88...>]

Hello. I'm using  vtun and tun device (over udp protocol) compressed with lzo, 
level 6 to connect two localisations, physically linked together with 802.11b 
radio. The tunnel helps me to shape the traffic, and the compression saves 
the radio's bandwidth. (and the ip tunnel helps to stop broadcast and arp 
traffic as i think). The configuration looks like that:

ISP -> server 1 (public class: xx.xx.196.96/28 on eth1 and assigned ip 
address: xx.xx.196.97), vtund server. eth2(10.100.100.1) is directly 
connected to the accesspoint --> radio link --> server2: eth0 (10.100.100.2) 
vtund client.
The  configs:

xx.xx.196. - still the same public IP's class.

server1:

default {
  compress lzo:6;       # Compression is off by default
  speed 0;              # By default maximum speed, NO shaping
}

# TUN example. Session 'cobra'.
cobra {
  passwd  $$$$$;
  type  tun;            # IP tunnel
  proto udp;            # UDP protocol
  keepalive yes;        # Keep connection alive
  persist yes;

  up {
        # Connection is Up
        ifconfig "%% xx.xx.196.109 pointopoint xx.xx.196.108 mtu 1450";

  };
}

server2:
cobra {
  passwd  $$$$;
  type  tun;            # IP tunnel
  proto udp;            # UDP protocol
  keepalive yes;        # Keep connection alive
  persist yes;


  up {
        # Connection is Up
        ifconfig "%% xx.xx.196.108 pointopoint xx.xx.196.109 mtu 1450";
        route "add default gw xx.xx.196.109";
        program "echo 'tunnel's up.' >>/root/bledy-tunelu";

  };

  down {
  program "echo 'tunnel's down!'  >>/root/bledy-tunelu";
  }

}

eth1 of server2 is 192.168.1.1/24 and it's connected to a LAN and masqueraded 
to xx.xx.196.108 (from tun)

With this configuration - almost everythink works great. Except for some 
webpages, ie: www.wizzair.com ; store.yahoo.com ; www.deviantart.com (these 
were reported by our customers). What can be wrong? When I stop vtund and 
change routing options - these sites work properly.. What's wrong?

Tomek.