if it's not the sysctl, can gateway1 ping client2 || gateway2 ping client1 ?
no
or client1 ping 192.168.2.1 || client2 ping 192.168.2.2 ?
yes also, client1 can't ping 192.168.2.2 || client2 can't ping 192.168.2.1.
if it's not the sysctl, can gateway1 ping client2 || gateway2 ping client1 ?
no
or client1 ping 192.168.2.1 || client2 ping 192.168.2.2 ?
yes also, client1 can't ping 192.168.2.2 || client2 can't ping 192.168.2.1.