nat: Allow to use the prefix lookup to rewrite numbers

* Increase the rewritten rule to five digits (this is the easiest
  for the unit test). This will add another 40kb to the runtime size.

* Create a unit test that tests adding and removing the prefix rules.

* Use the regexp match to replace from one package
10 files changed
tree: f1c012375d24c6f58e14c8606a11fb671d3b1da2
  1. debian/
  2. hlrsync/
  3. linux-kernel/
  4. openbsc/
  5. wireshark/
  6. README