I have a similar issue with GL-AR750S running 3.101.
My use case is slightly different:
- The GL-AR750S is connected to a VPN provider (Mullvad) with OpenVPN (UDP port 1194).
- A “do not use VPN for the following” policy is added with the IP address of my private cloud server.
I attempt to connect to my cloud server with OpenVPN (UDP port 1194) from a client PC that is connected to the GL-AR750S. The connection is established successfully, but then completely freezes after 60 sec.
I’m not a Linux networking expert, but I think this may have something to do with the conntrack settings in the iptables rules that are added when the VPN Policy is enabled. The connection freezing after 60 sec seems to correlate with the netfilter conntrack UDP timeout value in “/proc/sys/net/netfilter/nf_conntrack_udp_timeout”.
root@GL-AR750S:~# cat /proc/sys/net/netfilter/nf_conntrack_udp_timeout
60
I have not tried any other VPN policies, therefore I do not know if a similar problem may exist with TCP sessions.