[Bro] Bro 2.1 support for sniffing on multiple interfaces faces

[Coen Bakkers]

Does Bro 2.1 support sniffing on several interfaces at the same time? I have tried this now on a dozen of nodes, and the behavior does not seem to be consistent.
Note that I am not trying to sniff an outbound and an inbound stream that are related, but I have a tap port on a separate network that I also interested in in covering.
Sometimes multiple interfaces in node.cfg will work, but sometimes it makes Bro just hang and not record any of the http, dns, ftp logs etc..