9.18 behavior change for mDNS queries with dig

[Evan Hunt]

On Sun, Jun 26, 2022 at 10:00:08PM -0500, Larry Stone wrote:
> I recently moved from 9.16 to 9.18 and just noticed that dig no longer
> resolves mDNS queries.
> 
> With 9.16:
> dig +short @224.0.0.251 -p 5353 hostname.local
> 192.168.0.82
> 
> With 9.18:
> dig +short @224.0.0.251 -p 5353 hostname.local
> ;; connection timed out; no servers could be reached
> 
> I can’t find anything in the Release Notes (or anyplace else) about this. 

"dig" was rewritten in 9.18 to use the libuv-based network manager
instead of the old socket code; it's probably related to that.  Please
open a bug report at https://gitlab.isc.org/isc-projects/bind9/-/issues,
we'll look into it.

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