code:
 wrt:~$ tcpdump -v -i vlan3 arp
tcpdump: listening on vlan3, link-type EN10MB (Ethernet), capture size 96 bytes
00:01:16.975307 arp who-has 172.16.42.52 tell 172.16.40.1
00:01:17.613677 arp who-has 172.16.36.1 tell 172.16.39.56
00:01:17.651024 arp who-has 172.16.42.52 tell 172.16.40.1
00:01:17.651709 arp who-has 172.16.37.1 tell 172.16.36.1
00:01:17.728584 arp who-has 172.16.37.1 tell 172.16.36.1
00:01:17.878360 arp who-has 172.16.8.1 tell 172.16.8.179
00:01:18.019324 arp who-has 172.16.8.1 tell 172.16.8.179
00:01:18.030533 arp who-has 172.16.8.1 tell 172.16.8.179
00:01:18.073617 arp who-has 172.16.8.1 tell 172.16.8.179
00:01:18.135386 arp who-has 172.16.38.15 tell 172.16.36.1
00:01:18.180799 arp who-has 172.16.41.140 tell 172.16.40.1
00:01:19.983868 arp who-has 172.16.36.1 tell 172.16.39.56
00:01:19.999469 arp who-has 172.16.36.1 tell 172.16.39.56
00:01:21.180858 arp who-has 172.16.41.142 tell 172.16.40.1
00:01:21.389316 arp who-has 172.16.36.1 tell 172.16.36.191
00:01:21.651183 arp who-has 172.16.41.142 tell 172.16.40.1
00:01:21.651878 arp who-has 172.16.41.140 tell 172.16.40.1
00:01:21.652664 arp who-has 172.16.38.15 tell 172.16.36.1
00:01:21.653237 arp who-has 172.16.37.1 tell 172.16.36.1
00:01:21.653912 arp who-has 172.16.42.52 tell 172.16.40.1
00:01:22.553506 arp who-has 172.16.42.57 tell 172.16.40.1
00:01:22.680829 arp who-has 172.16.41.143 tell 172.16.40.1
00:01:23.177912 arp who-has 172.16.8.1 tell 172.16.8.179
00:01:23.225329 arp who-has 172.16.8.1 tell 172.16.8.179
00:01:23.273781 arp who-has 172.16.8.1 tell 172.16.8.179
00:01:24.180859 arp who-has 172.16.41.144 tell 172.16.40.1
00:01:24.597063 arp who-has 172.16.39.2 tell 172.16.37.84
00:01:25.030894 arp who-has 172.16.36.1 tell 172.16.39.56
00:01:25.044186 arp who-has 172.16.36.1 tell 172.16.39.56
00:01:25.144242 arp who-has 172.16.36.209 tell 172.16.39.2
00:01:25.332358 arp who-has 172.16.10.88 tell 172.16.10.88
00:01:25.651351 arp who-has 172.16.41.144 tell 172.16.40.1
00:01:25.652050 arp who-has 172.16.41.143 tell 172.16.40.1
00:01:25.652732 arp who-has 172.16.42.57 tell 172.16.40.1
00:01:25.653468 arp who-has 172.16.41.142 tell 172.16.40.1
00:01:25.654095 arp who-has 172.16.41.140 tell 172.16.40.1
00:01:25.654782 arp who-has 172.16.38.15 tell 172.16.36.1
00:01:25.655459 arp who-has 172.16.37.1 tell 172.16.36.1
00:01:25.656136 arp who-has 172.16.42.52 tell 172.16.40.1
00:01:25.680839 arp who-has 172.16.41.145 tell 172.16.40.1
00:01:25.822497 arp who-has 172.16.10.88 tell 172.16.10.88
 

code:
00:04:56.319752 arp who-has 172.16.10.138 (Broadcast) tell 172.16.8.1
00:04:56.420058 arp who-has 172.16.10.138 (Broadcast) tell 172.16.8.1
00:04:56.519818 arp who-has 172.16.10.138 (Broadcast) tell 172.16.8.1
00:04:56.619712 arp who-has 172.16.10.138 (Broadcast) tell 172.16.8.1
00:04:56.719683 arp who-has 172.16.10.138 (Broadcast) tell 172.16.8.1
00:04:56.819725 arp who-has 172.16.10.138 (Broadcast) tell 172.16.8.1
00:04:56.919685 arp who-has 172.16.10.138 (Broadcast) tell 172.16.8.1
00:04:57.019728 arp who-has 172.16.10.138 (Broadcast) tell 172.16.8.1
00:04:57.119654 arp who-has 172.16.9.234 (Broadcast) tell 172.16.8.1
00:04:57.219746 arp who-has 172.16.9.234 (Broadcast) tell 172.16.8.1
00:04:57.319631 arp who-has 172.16.9.234 (Broadcast) tell 172.16.8.1
00:04:57.325144 arp who-has 172.16.36.125 tell 172.16.36.28
00:04:57.325377 arp who-has 172.16.9.234 (Broadcast) tell 172.16.8.1
00:04:57.425607 arp who-has 172.16.9.234 (Broadcast) tell 172.16.8.1
00:04:57.513921 arp who-has 172.16.36.1 tell 172.16.39.56
00:04:57.514156 arp who-has 172.16.9.234 (Broadcast) tell 172.16.8.1
00:04:57.517993 arp who-has 172.16.36.1 tell 172.16.39.56
00:04:57.518188 arp who-has 172.16.9.234 (Broadcast) tell 172.16.8.1
00:04:57.618605 arp who-has 172.16.9.234 (Broadcast) tell 172.16.8.1
00:04:57.661063 arp who-has 172.16.38.168 tell 172.16.36.1
00:04:57.661277 arp who-has 172.16.9.234 (Broadcast) tell 172.16.8.1
00:04:57.661805 arp who-has 172.16.43.132 tell 172.16.40.1
00:04:57.662063 arp who-has 172.16.9.234 (Broadcast) tell 172.16.8.1
00:04:57.762544 arp who-has 172.16.10.88 (Broadcast) tell 172.16.8.1
00:04:57.766502 arp who-has 172.16.8.109 (Broadcast) tell 172.16.8.1
00:04:57.866682 arp who-has 172.16.8.109 (Broadcast) tell 172.16.8.1
00:04:57.966555 arp who-has 172.16.8.109 (Broadcast) tell 172.16.8.1
00:04:58.066507 arp who-has 172.16.8.109 (Broadcast) tell 172.16.8.1
00:04:58.139538 arp who-has 172.16.43.1 tell 172.16.40.126
00:04:58.139811 arp who-has 172.16.8.109 (Broadcast) tell 172.16.8.1
00:04:58.240520 arp who-has 172.16.8.109 (Broadcast) tell 172.16.8.1
00:04:58.340506 arp who-has 172.16.8.109 (Broadcast) tell 172.16.8.1
00:04:58.440503 arp who-has 172.16.8.109 (Broadcast) tell 172.16.8.1
00:04:58.537063 arp who-has 172.16.43.132 tell 172.16.40.1
00:04:58.537336 arp who-has 172.16.8.109 (Broadcast) tell 172.16.8.1