zmqpubrawtx only binds once (unlike rpcbind & co)

[coolaj86]

dashd can be bound to multiple interfaces with rpcbind, but not with zmqpubrawtx.

dash.conf:

txindex=1
addressindex=1
timestampindex=1
spentindex=1

[main]
rpcuser=app
rpcpassword=hackmeplzkthx
# localhost
bind=127.0.0.1:9999
rpcbind=127.0.0.1:9998
rpcconnect=127.0.0.1:9998
rpcallowip=127.0.0.1/16
zmqpubrawtx=tcp://127.0.0.1:28332
zmqpubrawtxlock=tcp://127.0.0.1:28332
# LAN
bind=10.11.5.104:9999
rpcbind=10.11.5.104:9998
rpcconnect=10.11.5.104:9998
rpcallowip=10.11.5.104/24
zmqpubrawtx=tcp://10.11.5.104:28332
zmqpubrawtxlock=tcp://10.11.5.104:28332

I've run with the # localhost section first and can confirm that I can access ZMQ via localhost, but not my LAN address.

I've also moved the # LAN section first and confirmed that the opposite is true.

In both cases, RPC can be accessed from either network as expected.