Can workers be behind NAT boxes?

[dsheets]

trafficstars

It looks like workers need to register their IP addresses and port numbers. Is this necessary? What if workers are behind network address translation middleboxes?

[sevenEng]

if the worker doesn't hold a copy of a dependency object, it will ask the ip/port of the holder worker from master and then retrieve it from the other worker, the master only provides mapping from a object id to an position here. It's one of the strategies adopted by CIEL, maybe we could discuss the necessity

[dsheets]

Perhaps if workers could register domain names as well as IP addresses, the DNS could be used as a layer of service indirection ala signposts.