Hi! We're experiencing occasional stalls of a single (so far) node in a star-like configuration.
The server in the center is a linux system with kernel 5.10.13 with a built-in wireguard module. The client is a windows machine with current wireguard software installed from the site. Sometimes (which happened 3 times already), the tunnel stops working, - no traffic goes within the tunnel as far as I can see. I'm not sure yet if the encrypted packets are flowing between the two nodes, - at least the linux system is sending them but I can't say for sure if the windows system does the same, - this is something for me to watch the next time it happens. What can cure the tunnel immediately is a simple "refresh" command, - wg setconf $if /etc/wireguard/$if.conf - this makes the whole tunnel operational again immediately. Other nodes of the tunnel are unaffected by this (except of the momentary drop of service during the setconf operation and the reconnect each node is doing after that). The question is: how can I debug what's going on the next time this happens, besides watching more closely which packets are flowing? Thanks, /mjt
