this can coalesce sends/writes in future versions of libuv

this fixes an issue with libuv sometimes crashing with mismatching number
of descriptors with REUSEPORT

when the daemon starts in non-interactive mode, it creates a pipe in the ‘tty/<pid>’ which can be used to interact with it remotely - much wow

e.g. $ socat - UNIX-CONNECT:tty/38284

before root hints were hardcoded to the resolver,
now they are present in form of a cut in the resolution
context, and the modules can add/remove/replace them
on the fly