[Bro] Question regarding manager and proxy defined in node.cfg

[Espresso Beanies]

Hi,

I've seen documentation where node.cfg files are defined as:

[manager]
type=manager
host=127.0.0.1
interface=eth0

[proxy]
type=manager
host=127.0.0.1
interface=eth0

And I've also seen other documentation defined that excludes the interface:

[manager]
type=manager
host=127.0.0.1

[proxy]
type=manager
host=127.0.0.1

If I'm running Bro on a local machine, no cluster configuration, etc, what
effect does defining the interface type for the proxy and manager have over
not defining it at all?

Thanks!
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