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> This means that if I use telnet to any open port and then I close the
> connection PF will keep the connection in FIN_WAIT_2 status until the time
> limit expires. This is a behaviour that you don't note without the src-track
> option because the server will keep accepting new connections...
> The strange thing is that other connections to the server from other hosts on
> the internet doesn't get closed too! PF will always put them in one of these
> two status: TIME_WAIT:TIME_WAIT or FIN_WAIT_2:FIN_WAIT_2.
> Any clue ?
TCP goes into a 2msl time wait state after the connection closes in case
a segment got delayed in the network. That is how TCP works.