* local_ip: add interface selection

local_ip: add interface selection for macOS
local_ip: add interface support for Linux and others
local_ip: fix quotes
local_ip: fix line length
local_ip: fix line length for realsies this time

* local ip: change default to auto and simplify if statement

* local ip: make error for invalid interface actually work on linux

* local ip: remove unneeded slash

* local ip: silence errors from ip and ifconfig
Co-authored-by: dylan <dylan.araps@gmail.com>