RTNETLINK answers No such file or directory

1. RTNETLINK answers: No such file or directory

修改默认路由时，有如下报错：

[root@linux ~]#ip route change default via 192.168.1.2

RTNETLINK answers: No such file or directory

查看路由信息

[root@linux ~]# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.1.1  0.0.0.0         UG    0      0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     1002   0        0 eth0
192.168.1.0    0.0.0.0         255.255.240.0   U     0      0        0 eth0

解决方法：

关闭NetworkManager并取消开机自启

systemctl stop NetworkManager
systemctl disable NetworkManager

重启网卡

systemctl restart network

接着执行修改默认路由命令

ip route change default via 192.168.1.2

查看路由信息

[root@linux ~]# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.1.2  0.0.0.0         UG    0      0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     1002   0        0 eth0
192.168.1.0    0.0.0.0         255.255.240.0   U     0      0        0 eth0

可以看到已经成功修改。