I have a SoftEther server running on Ubuntu 20.04 with UFW disabled. Ports 500,1701,4500 are open in the physical firewall. My clients can connect to the server over L2TP and receive a LAN IP which shows up as a lease in the DHCP server on the LAN.
However nothing on the LAN can ping the clients, and the clients cannot ping anything on the LAN. The clients cannot even ping each other.
It seems like there is a linux kernel issue related to this but I would think my VPN clients within the same hub should be able to ping each other? I have 2 NICs on the server and have bridged one of them to the LAN.
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