client
dev tap
proto udp
remote XXX XXX
resolv-retry infinite
nobind
persist-key
persist-tun
ca ca.crt
cert client.crt
key client.key
cipher AES-128-CBC
comp-lzo
verb 5
redirect-gateway def1

$ ifconfig tap0
tap0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    ether 82:96:bc:08:30:95
    inet 10.0.0.22 netmask 0xffffff00 broadcast 10.0.0.255
    media: autoselect
    status: active
    open (pid 67113)

client
dev tun
remote xx.xx.xx.xx
port 1194
proto udp
ca ca.crt
cert client.crt
key client.key
comp-lzo
nobind
route-delay 1 3
redirect-gateway def1

networksetup -setv6off Ethernet

networksetup -setv6off Wi-Fi

In Tunnelblick --> VPN Details...: --> Set nameserver (3.0b10)