Arch Linux

Description:
I have a box running Arch Linux that manages, among other things, my home network.
It is using "dnsmasq" for both managing DNS and DHCP.
It have been working fine for the last 4 years using the same setup, until recently.
After updating "dnsmasq" from version 2.78-2 to 2.79-1, the network clients started having trouble with DNS - eg. taking so long for the request to happen that the browsers end up giving up and reporting time-outs. These time outs would last for about 2-3 minutes approximately every 30 minutes and then everything would be back on track from another half hour or so.
Downgrading "dnsmasq" back to version 2.78-2 solves the time-out problems. Updating the package again will make the issues return.
I am not sure this is arch specific, or even some configuration corner case, but I don't see anything related in the upstream mailing list.
The changes in /etc/dnsmasq.conf between versions as far as my setup is concerned are only in commented lines, so it's not likely to be a "changed configuration issue".
During these "timeouts", nothing gets logged in journalctl regarding "dnsmasq".

Additional info:
* package version(s)
2.79-1
* config and/or log files etc.
N/A

Steps to reproduce:
Use an Arch Linux box to manage a small network using "dnsmasq". Update from version 2.78-2 to 2.79-1 and the issue will crop up.

PS - I'm not 100% sure this is an arch specific issue. Please let me know if this would be more appropriate to report upstream.