I’m using openconnect on F40 via its NetworkManager plug-in (plasma-nm-openconnect), and I noticed via journalctl that, every 72 seconds, it tries to establish a DTLS handshake, but fails:
DTLS handshake failed: Resource temporarily unavailable, try again.
I’m almost sure my VPN provider does not allow UDP, so I’d like to disable it altogether. The command line openconnect command has a --no-dtls option, but since I’m using it via NetworkManager, I don’t know how to add it.
I couldn’t find any configuration files named openconnect.* on /etc, and dnf repoquery -l openconnect and dnf repoquery -l NetworkManager-openconnect report no relevant files.
Is there a way to change this behavior while using NetworkManager? If so, how?