root@mw25:/tmp# ip route show 10/16
10.0.0.0/16 dev eth0  scope link 
root@mw25:/tmp# ip route change 10/16 dev eth0 rto_min 300ms
root@mw25:/tmp# ip route show 10/16
10.0.0.0/16 dev eth0  scope link  rto_min lock 3ms