PowerDNS Passthru Notify Patch

This patch will allow you to redirect PowerDNS notifications to a "passthru" server. It is intended to fix notify/axfr behavior in anycast clusters of PowerDNS auth servers however it may be useful for other situations.

The configuration option "passthru-notify" has been added to the pdns.conf parser. The option accepts multiple IPv4 and IPv6 address values.

This patch obsoletes issue #655.

Ralph Covelli
Hurricane Electric / AS6939
rcovelli@he.net