One of the Openvpn clients does not see anyone on the network, what should I do?

Question

linux

There is an openvpn server and several clients
All clients work fine (ping each other and pinging the server)
Except for one of which everyone can ping, but he cannot ping anyone, although when I send a ping to the server address, then on the server tcpdumb'om you can see that the icmp packets come from this address.
Tell me in which direction to dig? (((

Answer 1

firewall on server and client