ほぼ雑記的メモ
NAME
gethostbyname, gethostbyname2, gethostbyaddr, gethostent, sethostent, endhostent, herror, hstrerror - get network host entry
〜中略〜
BUGS
These functions use static data storage; if the data is needed for future use, it should be copied before any subsequent calls overwrite it. Only the Internet address format is currently understood.