Hi there everyone, total openWRT noob here.
I'm running into an issue where wireguard interfaces that I make from CLI will disappear upon reboot. To create the tunnel from the command line I am following this tutorial.
The tunnels work fine until the device reboots, then the interface is completely gone. If I try to bring the interface back up, ip returns the error "SIOCGIFFLAGS: No such device".
Does anyone have thoughts on what could be causing this? I am using 22.03.5 on the Vocore2.
-Doong
Welcome to the community!
That's not an OpenWrt Wiki.
Given Wireguard usually needs to be rebooted anyway, I have a question.
Did you add this Wireguard interface via uci commands or by editing /etc/config/network
or
by some other method?
Hi there, thanks for the reply. I'll check out the thread you mentioned and look into making/configuring the interfaces with uci.
To this point I was creating the interfaces with
ip link add dev [interface name] type wireguard
Then configuring them (listen port, private key, peer end point ip, etc...) with
wg set
At a glance its interesting that the link is going up without using uci.
Not really it is actually what is done with the parameters set in/by UCI 
You are using commands customizing the runtime configuration.
Runtime configuration cannot survive reboot by design.
Use UCI for persistent configuration.
Thanks, everyone, for the input.
I followed the procedure from here and it is working perfectly.
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