Changing openvpn dhcp pool
OK finally it is solved with some changes on the config file:
port 1194
proto udp
dev tun
ca /etc/openvpn/ca.crt
cert /etc/openvpn/server.crt
key /etc/openvpn/server.key
dh /etc/openvpn/dh2048.pem
mode server
tls-server
topology subnet
push "topology subnet"
ifconfig 10.8.0.1 255.255.254.0
ifconfig-pool 10.8.1.0 10.8.1.253
route-gateway 10.8.0.1
push "route-gateway 10.8.0.1"
client-config-dir /etc/openvpn/ccd
push "dhcp-option DNS 8.8.8.8"
push "dhcp-option DNS 8.8.4.4"
client-to-client
keepalive 10 300
comp-lzo
user nobody
group nobody
persist-key
persist-tun
status /etc/openvpn/openvpn-status.log
verb 6