Last modified: 2014-09-25 00:19:51 UTC
svn.wikimedia.org is advertising an IPv6 address in DNS, but it doesn't respond on port 80 to requests sent via IPv6. This causes Subversion check-outs on machines with IPv6 connectivity to hang.
$ host svn.wikimedia.org
svn.wikimedia.org is an alias for mayflower.esams.wikimedia.org.
mayflower.esams.wikimedia.org has address 184.108.40.206
mayflower.esams.wikimedia.org has IPv6 address 2620::862:1:209:3dff:fe10:d5d2
Hm, after trying a couple times it started to work. Must have been a fluke.