Hi, All, I've installed ocserv 0.8.9 and it worked well except that the gateway ip address of ipv4-network does not seem to exist. It contains the following lines in ocserv.conf: ipv4-network = 192.168.100.0 ipv4-netmask = 255.255.255.0 dns = 192.168.100.1 I've tried to set ipv4-network 192.168.100.1, but "ping 192.168.100.1" still doesn't work on the client side. I have to set the ip address manually by running "ip addr add 192.168.100.1/24 dev eth0.2" on the server side, then everything is OK. Is it possible to set the gateway ip address in ocserv.conf? I found both 192.168.100.0 and 192.168.100.1 are available as the parameter "ipv4-network", is there any difference? THX in adv. regards, Tefeng 2015-2-27