OpenVPN 注意 繋がらない,動かない, server:No DNS/DNS-forwarder on server host, client:"push DNS-option" can't be pushed into NetworkManager setting
start dnsmasq
server:$ sudo dnsmasq -a 10.8.0.1 (server mode default)
http://stackoverflow.com/questions/24797401/solved-openvpn-ubuntu-network-manager-connection-ok-but-not-resolving-not
client:$ sudo nano /etc/NetworkManager/NetworkManager.conf
#dns=dnsmasq
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1211110
http://superuser.com/questions/702968/ubuntunetworkmanageropenvpn-completely-replace-etc-resolv-conf-with-openvpn