I'm trying to implement some feature at the TCP layer of Minix 3.1.2
kernel. I'm unable to establish more than 5 connections (either open
or established). The length of listen queue for a specific TCP file
descriptor is 5, but I see that, it is not getting restricted at that
place. In fact, there is 3 way hand shake going on and latter Minix
sends an Final packet to the client.

If any one have a clue about where the restrictions of "5 connections"
is happening .. kindly let me know.