Log Message:
Update to v34 (20190313). From the changelog:

- added pseudo IP address ':0' for servers to allow simultaneous binding
  to both IPv4 and IPv6.  Disregard of unresponsive DNS servers for query.
- Quadratic lookup scheme for dns_transmit.c (tx. Joseph Tam).
- Fixed missing IP address for client rejection in log (tx. Bob Dodds).