Log Message:
Update to 43. From the changelog:

- Fixed bug in dns_txt evaluation for long TXT records -> RDATA labels
  not respected.
- Fixed generation of SPF and DKIM records in tinydns due to missing
  labels in RDATA.
- The maximal TXT label-len is 255 throughout.
- Fixed man page of dnscache referencing outdated EDNS0 disabling.
- Added script to extract pubkey from keyfile to be used for DKIM records.
- Fixed wrong response to PTR query of ::1 -> ip6-loopback.