missing getifaddrs

[mwanner]

I implemented a trivial wrapper around getifaddrs, which I'd like to polish and get into the nix crate, if that's appropriate. Any specific requirements regarding the interface? Otherwise I'd prepare something based on an Iterator over the entries returned.

[Susurrus]

Thanks for volunteering your work! I'm sure that interface you find usable will be fine. It can also be modified later if it's hard to use in a specific use case. We do like to have good documentation and tests, so please spend some time on that so that it's easy to use.