[Bug #571] IPv6$B7O$NDj?t$,L$Dj5A(B (for 1.8)

Bug #571: IPv6e$B7O$NDj?t$,L$Dj5Ae(B (for 1.8)
http://redmine.ruby-lang.org/issues/show/571

e$B5/I<<Te(B: Motonori IWAMURO
e$B%9%F!<%?%9e(B: Open, e$BM%@hEYe(B: Normal

e$B0J2<$NLdBj$K4X$9$ke(B1.8e$BMQ$N:9J,$r:n@.$7$^$7$?$N$G!“<h$j9~$s$G$$$?$@$1$J$$$G$7$g$&$+!#e(B
[Bug #547] IPV6e$B7O$NDj?t$,L$Dj5Ae(B
[ruby-dev:36201] e$B%=%1%C%H4XO”$NDj?t$,$$$m$$$mL$Dj5Ae(B