[LaimisV]

Should I open this as separate issue as it drifted from initial question?

I have `nvram set` values that I change so they cover whole configuration. I don't use DD-WRT GUI to do changes.

[blkt]

Use current builds and reset, explore what can already now be done with WebUI before diving back into commands.

For wireless issues, try advanced settings checkbox for both radios to set each firmware type from dd-wrt to vanilla.
https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1262148#1262147
https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1272454#1272454
https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1272576#1272570
Final thoughts set regulatory domain and do not use automatic channel selection so specify width channel extension.

[egc]

Certainly start another thread in the Atheros forum.

The R7800 spontaneous rebooting is seldom seen.

Can be anything from bad wireless setting to running out of memory, you can setup remote logging to capture things also keep an eye on CPU usage and if there are rogue processes with top or htop

Consider adding a SWAP file, I think SWAP is enabled on the R7800.

Only use a SWAP file if you have connected an SSD via USB3

[LaimisV]

Thanks for input. Here is new thread https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1272959#1272959 where same issues 2-5 described.

[LaimisV]

Marked this issue as solved, because it doesn't need any input. Just waiting. If R7800 will survive additional month without this issue, I'm guaranteed that firmware upgrade helped. Also I will support community.

[LaimisV]

Unfortunately, I got this issue few times during 6 months time without changing configuration.

This command can generate wrong packets:

ping -I oet1 -I 7.X.X.110 192.168.250.111

So WG behaves same. It uses public IP where it shouldn't use it. The work around to this problem is

iptables -t nat -A POSTROUTING -o oet1 -s 7.X.X.110/32 -d here_is_IP_that_you_want_to_use_instead_of_public_IP_7.X.X.110/32 -j SNAT --to 192.168.250.111

It could be solution for someone. Unfortunately, I can't use NAT. I need unNATed traffic. 99.99%+ times everything works, but occasionally I get this weird issue. Ping command demonstrates how wrongly it behaves.