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.
This is because the tunnel mesh can't reach 44/8 addresses that aren't
reachable via a non-44/8 tunnel entrance.
This means that we can't have gateways whose entrance address is in 44/8.
This implies that TUNNEL and DIRECT should be mutually-exclusive options
in allocation requests.
I'd be happy to be wrong about this.
- Brian