使用arping检查ip冲突.
[root@node1 ~]# arping -I enp4s0f0 192.168.11.3
ARPING 192.168.11.3 from 192.168.12.196 enp4s0f0
Unicast reply from 192.168.11.3 [18:C0:4D:1D:AA:7C] 0.683ms
Unicast reply from 192.168.11.3 [18:C0:4D:1D:AA:7C] 0.551ms
Unicast reply from 192.168.11.3 [18:C0:4D:1D:AA:7C] 0.562ms
Unicast reply from 192.168.11.3 [18:C0:4D:1D:AA:7C] 0.548ms
如果返回的mac 地址有多个, 说明这个局域网出现ip冲突.