PfSync sync peer IP
can anybody tell me what this option is for?
From my understanding this can be left empty if I allow all traffic from fw1 to fw2 over the sync interface with an appropriate fw-rule, right?
And another thing: Shouldn't 'stable table' be renamed to 'state table'?
I mean a 'stable table' is appreciated as well, but imho it's not the correct description here. ;)
Yes, you're correct on both counts.
That should be state table – I fixed that in HEAD.
And you can leave it blank if you want, it will use multicast to update.