How do I do an arp scan with nmap?

[ToddAndMargo via dev <dev () nmap org>]

Hi All,

I caught a rogue network (192.168.213) with windows arp:

C:\>arp -a

Interface: 192.168.210.100 --- 0x5
  Internet Address      Physical Address      Type
  192.168.210.1         00-90-7f-05-0f-5c     dynamic
  224.0.0.22            01-00-5e-00-00-16     static
  224.0.0.251           01-00-5e-00-00-fb     static
  239.255.255.250       01-00-5e-7f-ff-fa     static
  255.255.255.255       ff-ff-ff-ff-ff-ff     static

Interface: 192.168.213.56 --- 0x11
  Internet Address      Physical Address      Type
  192.168.213.1         02-90-7f-05-0f-60     dynamic
  192.168.213.255       ff-ff-ff-ff-ff-ff     static
  224.0.0.22            01-00-5e-00-00-16     static
  224.0.0.251           01-00-5e-00-00-fb     static
  239.255.255.250       01-00-5e-7f-ff-fa     static
  255.255.255.255       ff-ff-ff-ff-ff-ff     static

What is the syntax to get nmap to find all host on
a physical network even if their software networks
are different?

Many thanks,
-T


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