nix: add git/gh to dev shell

misc: did boring stuff

pkg: move to simple_logger (and fix some logging)

added back timeout support

fixed packet parsing and wait condition logic

added support for interface and address messages

add args, support interface filtering

properly structured wait-for-default-route

scungy default request for ipv4

added logging, did a bunch of stuff that doesn't crash

wrote a lot of stuff that crashes

multi-crate refactor

multi-crate refactor

wrote a bunch of definitions