Deprecation notice for BIND 9.20+: "dialup", "heartbeat-interval"

[Evan Hunt]

Hello,

In line with ISC's deprecation policy, I am notifying the mailing list
of our intent to deprecate the "dialup" and "heartbeat-interval" options
in named.

These options concentrate zone maintenance operations, such as
zone transfers between primary and secondary servers, into clusters
for the benefit of servers that only have intermittent connectivity
to the internet. This is no longer a common enough scenario to justify
the added code complexity.

They will be deprecated as of BIND 9.20 and removed in BIND 9.22.

-- 
Evan Hunt -- each at isc.org
Internet Systems Consortium, Inc.