OP postou a resposta em forums.openvpn.net
Use esta configuração do servidor:
port 1194
proto udp
dev tun
topology subnet
mode server
tls-server
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt # flexo_client,10.8.0.4
client-config-dir ccd
client-to-client
#ifconfig 10.8.0.1 255.255.255.0
route 192.168.3.0 255.255.255.0 10.8.0.4
route 192.168.4.0 255.255.255.0 10.8.0.4
ca /etc/openvpn/keys/ca.crt
cert /etc/openvpn/keys/mom_server.crt
key /etc/openvpn/keys/mom_server.key # This file should be kept secret
dh /etc/openvpn/keys/dh1024.pem
keepalive 10 120i
comp-lzo
user nobody
chroot /etc/openvpn
group nogroup
daemon
persist-key
persist-tun
status openvpn-status.log
verb 3
Com este / etc / openvpn / ccd / flexo_client
push "route 192.168.1.0 255.255.255.0 10.8.0.1"
iroute 192.168.3.0 255.255.255.0
iroute 192.168.4.0 255.255.255.0
e esta configuração do cliente:
config openvpn 'flexo_client'
option nobind '1'
option float '1'
option client '1'
option comp_lzo '1'
option dev 'tun0'
option verb '3'
option persist_tun '1'
option persist_key '1'
option remote_cert_tls 'server'
option remote 'x.x.x.x'
option proto 'udp'
option resolv_retry 'infinite'
option ca '/etc/openvpn/ca.crt'
option cert '/etc/openvpn/flexo_client.crt'
option key '/etc/openvpn/flexo_client.key'
option ns_cert_type 'server'
option topology 'subnet'
option enable '1'
Mais informações sobre o uso de OpenVPN e iroute podem ser encontradas em backreference.org