NetBSD TCP Congestion Control Configuration

[Mukosi Mukwevho <mukosi%gmail.com@localhost>]

Hi,

As part of my academic research, I need to be able to simulate the ealier 
version of TCP (as per RFC 793), that means running TCP stack without 
congestion control algorithms. How can I run TCP stack on NetBSD without the 
support of TCP Congestion Control Algorithms, i.e. Slow Start, Cogestion 
Avoidance, Fast Retransmit and Fast Recovery? 
 
Also, if feasible, is it possible to recompile the kernel disabling congestion 
control? Are there specific settings to enable/disable congestion control in 
NetBSD?
 
Your help will be much appreciated, thank you.
 
Regards,
Abraham