Fixes a critical issue that could cause yadifad to crash handling certain DNS packet.
Fixes an issue where yadifad would sometimes reply with an AXFR instead of an IXFR if the journal is under maintenance.
Increased the pid column in the logger to 6 characters
Drastically increased the limit for TCP queries. Note that using a high enough number compared to the available memory will cause yadifad to warn about limits and OOM kill risks. In practice a few hundred TCP queries should be enough.