nat: Improve the log message in case we have SCCP data without a connection

Describe which kind of data we have and where it was coming from
as this makes debugging a bit easier.
1 file changed
tree: 988c2ed0107d324da1dd992dadef406bbb42c03b
  1. hlrsync/
  2. linux-kernel/
  3. openbsc/
  4. wireshark/