gtphub: don't always try to do GGSN resolution.

If a GGSN is already known from unmapping, don't invoke a host resolution.
In a live working environment, it wouldn't hurt, because the lookups would
mostly return from the cache. But in a testing environment without a name
server, it barfs on every packet.

Sponsored-by: On-Waves ehi
2 files changed
tree: ed48c3fe7b88cbb6c90d8671ae4c378abad0497a
  1. debian/
  2. hlrsync/
  3. linux-kernel/
  4. openbsc/
  5. wireshark/
  6. .gitignore