default via 10.1.21.254 dev eth1  proto static 
10.1.20.0/22 dev eth1  proto kernel  scope link  src 10.1.20.15  metric 1 
10.1.21.254 dev eth1  proto static 
10.1.21.254 dev eth1  scope link  src 10.1.20.15 
169.254.0.0/16 dev eth1  scope link  metric 1000 
172.16.21.254 dev ppp0  proto kernel  scope link  src 172.16.20.15