zeromq/libzmq — pull request #448 by jgm-radez (2012-10-27 20:52:11+00:00)
Title: resolve issue 456

Do not filter out duplicate subscriptions on the XSUB side of
XSUB/XPUB, so that ZMQ_XPUB_VERBOSE doesn't get blocked by forwarding
devices (as long as the devices all use ZMQ_XPUB_VERBOSE)