--- Socket.gethostbyname(host)
    ۥ̾ޤIPɥ쥹(ˡ˴ؤƤ
    ۥȻ򻲾)
    ۥȤξ֤ޤۥȾϡۥ̾ۥ
    Ȥ̾󡢥ۥȤΥɥ쥹סۥȤΥɥ쥹
    ǤȤǤ

#    ۥȤΥɥ쥹pack줿
#    ʸǡunpack("CCCC")ʬǤޤ
      :
      irb(main):009:0> Socket.gethostbyname ("210.251.121.214")
      ["helium.ruby-lang.org", ["helium"], 2, "\322\373y\326"]

