merge revision(s) 56625: [Backport #12936]
* test/rinda/test_rinda.rb (test_make_socket_ipv6_multicast, test_make_socket_ipv6_multicast_hops): skip if IPv6 multicast address is not available.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@56788 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 56625: [Backport #12936]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@56788 b2dd03c8-39d4-4d8f-98ff-823fe69b080e