[44net] Basic help needed with Linux and rip44d

I have followed the instructions on the wiki pages to the exact detail, and am having issues with the setup. I am at the point where I can receive routing updates but cannot send any data over the tunnel. I am not the best when it comes to Linux but have a better understanding of networking, routers, and routing (Cisco). I have eth0 on a public address. I have eth1 on 44.64.192.253/24 I have tunl0 on 44.64.192.254/8 I am running Ubuntu 10.04 on VMWare. 1. When I create the tunl0 interface with the class A netmask, how is rip44d using this and where does the tunnel "endpoint" get defined? (remote endpoint address?) 2. I have the Linux machine running rip44d and another linux machine on the same assigned 44.64.192.x subnet. I can ping between them until I bring up the tunl0 interface. If I down and up the tunl0 interface, I can ping as expected. Can anyone explain this behavior? 3. The tunl0 interface is registering collisions equal to the number of packets transmitted. I cannot find a reason why this is happening. Thanks in advance, Jesse