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`.