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GRAVITL

From upgrade docs:
> traefik.tcp.routers.mqtt.rule=HostSNI(`broker.NETMAKER_BASE_DOMAIN`)
Does this mean I need to set up a new DNS record  for `broker`?

broker should have already had a dns record from previous versions, but if not, then yes

hmm I'm on 0.16.0 and I've never needed it?

Oh actually nvm, I am reusing an existing DNS record (API one) because I was using custom port

Is it possible to customize the broker DNS name?

that should be ok, I think, as long as all references are updated in docker-compose