台湾老片四级肉体陷阱:route -n和/proc/net/route相关

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route -n和/proc/net/route相关2007-09-06 19:16

[root@vmware-v2 temp]# cat /proc/net/route
Iface     Destination       Gateway           Flags     RefCnt    Use       Metric    Mask              MTU       Window    IRTT                                                       
eth0      000012AC          00000000          0001      0         0         0         00FFFFFF          0         0         0                                                                               
eth0      000112AC          00000000          0001      0         0         0         00FFFFFF          0         0         0                                                                               
eth0      0000FEA9          00000000          0001      0         0         0         0000FFFF          0         0         0                                                                               
eth0      00000000          010012AC          0003      0         0         0         00000000          0         0         0                                                                               
[root@vmware-v2 temp]# route -n
Kernel IP routing table
Destination       Gateway           Genmask           Flags Metric Ref      Use Iface
172.18.0.0        0.0.0.0           255.255.255.0     U       0        0          0 eth0
172.18.1.0        0.0.0.0           255.255.255.0     U       0        0          0 eth0
169.254.0.0       0.0.0.0           255.255.0.0       U       0        0          0 eth0
0.0.0.0           172.18.0.1        0.0.0.0           UG      0        0          0 eth0

route命令从/proc/net/route文件中取数据,设备名不变、目的地址从右到左每两位十六进制显示,标志位有1、3两种,分别是U和UG,掩码和目的地