Comment by vetinari

What would exactly be that "something"?

Statically linking glibc was always strongly discouraged. Even if you did it, nss and iconv are always dynamically loaded, and they need symbols from glibc itself, so your statically-glibc-linked binary would need to load dynamic libc anyway!

No, something doesn't need to check it, today it exists only to serve broken applications (and systems broken by their admins). Its semantic doesn't allow to express the needs of resolvers today (like per-interface or per-zone resolving or other mechanisms, like mDNS).

How the resolver is configured is its internal issue; apps should just use getnameinfo().