Subject: [44net] TUNNEL vs DIRECT connection of subnets From: Brian Kantor Brian@UCSD.Edu Date: 03/14/2015 02:30 AM
To: 44net@hamradio.ucsd.edu
At the current moment I can see no way for an AMPRNet subnet to be both TUNNEL and DIRECT (BGP-announced) connected, unless a special provision has been made to operate a gateway from a non-44/8 address into the BGP-connected subnet.
Sure, but I think that is not unreasonable. We do it on our gateway and there is no problem with it. The provider has issued a small non-44 subnet to the gateway machine and it routes the net-44 traffic to that address. (i.e. our provider announces 44.137.0.0/16 on BGP and accepts the traffic on their core router and they forward it to us, we forward our traffic for internet to them on another address in that subnet on which their router listens).
We are also on the IPIP mesh with our /16 and the tunnel endpoint is that same non-44 address (213.222.29.194). This means that other IPIP gateways forward traffic via a tunnel.
This works just fine. It also means the others do not have to setup exceptions for our subnet in their IPIP tunnel systems. Getting the /30 network required for this should be no problem even today.
Rob