As part of my Subtext BBS troubleshooting issues I decided to tackle MacTCP once and for all- getting it to the absolute latest version (2.1). And I wrote up what I did so you can do it as well:

https://dillernet.com/apple/2024/11/14/mactcp-done-right/

I also found out that the Apple Internet Route IP extension does not use MacTCP, it must be doing it's own thing for all it's IP TCPing.
#marchinosh #macTCP