[root@centos7 ~]# arp Address HWtype HWaddress Flags Mask Iface gateway ether 46:2o:62:75:29:a8 C em1 192.168.1.18 ether 01:20:23:bc:06:e1 C em1
[root@centos7 ~]# arp
Address HWtype HWaddress Flags Mask Iface
gateway ether 46:2o:62:75:29:a8 C em1
192.168.1.18 ether 01:20:23:bc:06:e1 C em1