Get Gentoo!
gentoo.org sites
gentoo.org Wiki Bugs Forums Packages
Planet Archives Sources
Infra Status

net-analyzer/
arping

Utility to see if a specific IP is taken and what MAC owns it

https://www.habets.pp.se/synscan/programs.php?prog=arping

There are no pull requests

You think something is missing here?
Start with filling a new pull requests.

If you also like to help the Gentoo project, you can consider sending a Pull Request via GitHub.
Before doing so, you might want to take a look at the wiki page.