Panic problem with AdGuardHome

[ghost]

Steps to reproduce

1. Start AdGuardHome from crontab at the boot after a sleep of 30 seconds
   2.Wait 1 or 2 minutes

Expected behavior

It start and stay in background

Actual behavior

Stop after 2 minutes

Screenshot:

Your environment

Description	Value
Version of AdGuard Home server:	0.96
How did you setup DNS configuration:	Only Router can contact the system for DNS query
If it's a router or IoT, please write device model:	BananaPi R2
Operating system and version:	Linux bpi-iot-ros-ai 4.14.122-bpi-r2-main #1 SMP Mon May 27 17:16:26 UTC 2019 armv7l GNU/Linux

[szolin]

Can you enable verbose logging? (Set verbose: true in yaml config file.)

I think it crashes because there is a nil dns.RR object inside Extra[] array. Without logs I don't see which code could make such request.

func (dns *Msg) IsEdns0() *OPT {
...
	for i := len(dns.Extra) - 1; i >= 0; i-- {
>>>		if dns.Extra[i].Header().Rrtype == TypeOPT {