Turris OS 5.1.2 is now in HBT (Testing) branch

After overnight reboot I lost dhcp – no clients would get an IPv4 address. I did another reboot (unfortunately perhaps) but that didn’t fix it, then I generated some diagnostics. For immediate fix, setting clients to static addresses seemed to work.

Suspicious part, at a quick look:

 4567 dnsmasq   2564 S    /usr/sbin/dnsmasq -C /var/etc/dnsmasq.conf.cfg01411c -k -x /var/run/dnsmasq/dnsmasq.cfg01411c.pid
 4575 root      2492 S    /usr/sbin/dnsmasq -C /var/etc/dnsmasq.conf.cfg01411c -k -x /var/run/dnsmasq/dnsmasq.cfg01411c.pid

I found not a single log line from dnsmasq. I’m sending the diags to support.

EDIT: maybe it was caused by my experimental setup that switched WAN port with one of the LAN ones (but it’s been working fine for days). I rolled back before that config change, updated, rebooted and the issue didn’t re-appear.

I was assigned to your issue and will look at it during this day and will let you know. In the meantime, we released this release into the Stable branch.