· 8 years ago · Dec 17, 2016, 10:36 PM
1mark@mark-P8Z77-I-0:~$ arp
2Address HWtype HWaddress Flags Mask Iface
3
4192.168.1.128 ether 08:86:3b:c8:d8:09 C eth0
5
6192.168.1.4 ether e0:91:f5:7c:7c:34 C eth0
7
8192.168.1.110 ether 9c:d3:6d:b1:d3:49 C eth0
9
10192.168.1.101 ether 94:10:3e:48:60:0d C eth0
11
12mark-N3050T ether d0:17:c2:ad:ff:58 C eth0
13
14192.168.1.117 ether b8:27:eb:ad:2e:72 C eth0
15
16192.168.1.129 (incomplete) eth0
17
18192.168.1.103 ether ec:1a:59:cb:42:25 C eth0
19
20192.168.1.111 ether 54:4a:16:02:54:a8 C eth0
21
22192.168.1.127 ether 84:ba:3b:05:6d:45 C eth0
23
24192.168.1.106 ether a4:77:33:2b:29:40 C eth0
25
26192.168.1.122 ether 00:18:dd:04:6a:cc C eth0
27
28mark-N53Jf ether 48:5d:60:71:7f:be C eth0
29
30gateway ether 28:c6:8e:20:a8:e5 C eth0
31
32mark@mark-P8Z77-I-0:~$
33
34All three hostnames that are present in the report can also be pinged using `ping hostname`
35
36The arp table, /proc/net/arp contains only ip addresses:
37
38mark@mark-P8Z77-I-0:~$ cat /proc/net/arp
39
40IP address HW type Flags HW address Mask Device
41
42192.168.1.128 0x1 0x2 08:86:3b:c8:d8:09 * eth0
43
44192.168.1.4 0x1 0x2 e0:91:f5:7c:7c:34 * eth0
45
46192.168.1.110 0x1 0x2 9c:d3:6d:b1:d3:49 * eth0
47
48192.168.1.101 0x1 0x2 94:10:3e:48:60:0d * eth0
49
50192.168.1.138 0x1 0x2 d0:17:c2:ad:ff:58 * eth0
51
52192.168.1.117 0x1 0x2 b8:27:eb:ad:2e:72 * eth0
53
54192.168.1.129 0x1 0x0 00:00:00:00:00:00 * eth0
55
56192.168.1.103 0x1 0x2 ec:1a:59:cb:42:25 * eth0
57
58192.168.1.111 0x1 0x2 54:4a:16:02:54:a8 * eth0
59
60192.168.1.127 0x1 0x2 84:ba:3b:05:6d:45 * eth0
61
62192.168.1.106 0x1 0x2 a4:77:33:2b:29:40 * eth0
63
64192.168.1.122 0x1 0x2 00:18:dd:04:6a:cc * eth0
65
66192.168.1.121 0x1 0x2 48:5d:60:71:7f:be * eth0
67
68192.168.1.1 0x1 0x2 28:c6:8e:20:a8:e5 * eth0