[ruby-dev:49878] [Ruby trunk Bug#12936] backport r56625 (skip if IPv6 multicast address is not available)

Issue #12936 has been updated by Usaku NAKAMURA.

Backport changed from 2.1: UNKNOWN, 2.2: REQUIRED, 2.3: DONE to 2.1: UNKNOW=
N, 2.2: DONE, 2.3: DONE

ruby_2_2 r56788 merged revision(s) 56625.

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Bug #12936: backport r56625 (skip if IPv6 multicast   address is not availa=
ble)
https://bugs.ruby-lang.org/issues/12936#change-61497

* Author: Tomoyuki Chikanaga
* Status: Closed
* Priority: Normal
* Assignee:=20
* ruby -v: -
* Backport: 2.1: UNKNOWN, 2.2: DONE, 2.3: DONE
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=E3=83=90=E3=83=83=E3=82=AF=E3=83=9D=E3=83=BC=E3=83=88=E7=AE=A1=E7=90=86=E7=
=94=A8=E3=81=AE=E3=83=81=E3=82=B1=E3=83=83=E3=83=88=E3=81=A7=E3=81=99=E3=80=
=82

FreeBSD 11.0 =E3=81=A7=E3=81=AE Rinda =E3=81=AE=E3=83=86=E3=82=B9=E3=83=88=
=E3=81=AE=E5=A4=B1=E6=95=97=E3=81=AE=E4=BF=AE=E6=AD=A3=E3=81=A7=E3=81=99=E3=
=80=82





--=20
https://bugs.ruby-lang.org/