[Pkg-utopia-maintainers] Bug#820697: network-manager should support both 'arping' implementations

[thomas at habets.se]

Package: network-manager
Version: 0.9.8.8

network-manager depends on package `iputils-arping`, which prevents
the cross-platform `arping` package from being installed without
removing network-manager.

If network-manager supported both, then either could be installed.

`arping` runs on many platforms whereas `iputils-arping` runs only on
Linux, thus preventing portable scripting. I'm sure `iputils-arping`
has *some* benefit too, but I don't know what that would be.

Disclaimer: I'm author of `arping`.