Everything worked fine with default declaration, but it produced a
warning and it is a really awful way to do it.

They need to be structured differently so it is possible to create them
easily with the macros.

It is pointer to a function returning pointer, not declaration of a
function returning pointer. How on Earth was it possible to assign to it
is a mystery.

And include forgotten file in git.

• Export the connections from bad IP addresses.
• Delete the old exports.

Up to the maximum age and for twice as many records. The limit is not
set on the number of login attempts, since that doesn't exactly hurt
performance and makes no sense to drop the attacks because there's too
many of them.

AS we will need to do it selectively.

Signal if the sending of logs is merely desirable or must happen
immediately.

Delay sending of the batch if there's no connection at the time. The
delay is limited by twice the usual limits, if connection is not
recreated by that time, the data is dropped.

Delay sending of the batch if there's no connection at the time. The
delay is limited by twice the usual limits, if not reconnected by then,
it is dropped.

Upcoming changes may generate older data than before, wipe longer
interval to accommodate the change.

Like when the login time already rolled out, but there's logout time. Or
when the login and logout times are the same.

Make sure the flow filters don't contain multiple instances of the same
address, which produced stupid log messages in ucollect. Duplicate
messages are now wiped out on the server.

And make it exclusive. It could lead to duplicate addresses to be added
or removed otherwise, testing if it really is the cause.