[Dnsmasq-discuss] Filter AAAA records option

Alexey Kuznetsov kuznetsov.alexey at gmail.com
Tue Jun 13 08:39:00 UTC 2023


Hello!

I'm using dnsmasq on my openwrt router and sometimes I need to block
AAAA records from querying. For example Transmission BT port check using
AAAA record but shared port opened at ipv4 interface. As result port
checking is broken. I have to disable 'portcheck.transmissionbt.com 
<http://portcheck.transmissionbt.com>'
from AAAA queries.

Another example. Google blocks requests from ipv6 free provider
(tunnelbroker.net/ <http://tunnelbroker.net/>) and I also block 
google.com <http://google.com> from AAAA queries to
make it use my ipv4 external address.

Right now I'm doing this to block AAAA record:

config domain
    option name 'portcheck.transmissionbt.com 
<http://portcheck.transmissionbt.com>'
    option ip '::1'

As result. dnsmasq return ::1 as result for querying
'portcheck.transmissionbt.com <http://portcheck.transmissionbt.com>'

. Some apps (browsers, etc) works fine
with that trick and using ipv4 instead. But some don't.

Can we have option to disable A and AAAA records using config?

-- 
AK
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