Use patched version of ERP5 with IPv6 support.

stack/erp5/buildout.cfg

@@ -373,7 +373,7 @@ recipe = plone.recipe.command
 location = ${buildout:parts-directory}/${:_buildout_section_name_}
 stop-on-error = true
 repository = http://git.erp5.org/repos/erp5.git
-branch = master
+branch = romain
 revision =
 command = "${git:location}/bin/git" clone --quiet --branch "${:branch}" "${:repository}" "${:location}" && if [ -n "${:revision}" ]; then cd "${:location}" && "${git:location}/bin/git" reset --quiet --hard "${:revision}" ; fi
 update-command = cd "${:location}" && "${git:location}/bin/git" fetch && if [ -n "${:revision}" ]; then "${git:location}/bin/git" reset --hard "${:revision}"; else "${git:location}/bin/git" reset --hard @{upstream} ; fi