darkk@thinkpad /etc/init.d $ ip rule list
0:      from all lookup local
32764:  from all fwmark 0x1 lookup rw
32765:  from 172.27.89.182 lookup rw
32766:  from all lookup main
32767:  from all lookup default

darkk@thinkpad /etc/init.d $ ip route show table rw
default dev tun_rw  scope link  src 172.27.89.182

darkk@thinkpad /etc/init.d $ sudo iptables -t mangle -L -vn
...
Chain OUTPUT (policy ACCEPT 1257 packets, 334K bytes)
 pkts bytes target     prot opt in     out     source               destination         
   98  6664 MARK       udp  --  *      *       0.0.0.0/0            213.180.204.8       OWNER UID match 1000 MARK or 0x1 
...

 85.834638 192.168.222.68 -> 213.180.204.8 UDP Source port: 44832  Destination port: traceroute