我尝试在redhat环境中通过dhcp推动静态路由。 我已经激活了rfc3442-classless-static-routes选项。 dhcp客户端也被configuration为请求这个optien，如https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.1_Technical_Notes/ar01s04s05.html
我的问题是，dhcp.lease包括我的选项，我可以在这里看到它。
[root@pDb1 dhclient]# cat dhclient-eth0.leases lease { interface "eth0"; fixed-address 10.1.0.100; filename "/pxelinux.0"; option subnet-mask 255.255.255.0; option routers 10.1.0.3; option dhcp-lease-time 43200; option dhcp-message-type 5; option dhcp-server-identifier 10.1.0.240; option rfc3442-classless-static-routes 8,10,0,0,10,1,0,240; option host-name "pDb1"; renew 1 2012/11/12 14:42:54; rebind 1 2012/11/12 19:43:30; expire 1 2012/11/12 21:13:30; } 但是它不更新路由表。
[root@pDb1 dhclient]# route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.1.0.0 * 255.255.255.0 U 0 0 0 eth0 link-local * 255.255.0.0 U 1002 0 0 eth0 default 10.1.0.3 0.0.0.0 UG 0 0 0 eth0