[GPRS] NS: Respond to GRE keepalive messages

GRE has the strange notion of keepalive messages being encapsulated IPv4
packets adressed back to the sender.  Since we actually really only care
about frame relay, this is a bit strange.  However, we'll do some sanity
checks and send it back through our GRE socket...
1 file changed
tree: aead454110ed2accfaa3d6891d59c99c3cef0e04
  1. hlrsync/
  2. linux-kernel/
  3. openbsc/
  4. rrlp-ephemeris/
  5. wireshark/