nat: First go at handling MGCP inside the nat

Listen on the MGCP gateway port and let our protocol stack
handle everything for now. We will need to have some more
control over things though.
3 files changed
tree: 31dcd10784ae919376302fa488516c8956b4abf5
  1. hlrsync/
  2. linux-kernel/
  3. openbsc/
  4. wireshark/