Improvements:
* API: increase serial after DNSSEC related updates
* Dnsreplay: bail out on a too small outgoing buffer
* Lower ‘packet too short’ loglevel
* Make check-zone error on rows that have content but shouldn’t
* Avoid an isane amount of new backend connections during an AXFR
* Report unparseable data in stoul invalid_argument exception
* Recheck serial when AXFR is done
* Add TCP support for alias
PR: 228114
Submitted by: maintainer
