The transition date for TCP was Jan 1, 1983 (see RFC 801 and various other documents by Crocker, et al). I don't recall any shutdowns, though my Arpanet access at the time was limited to a dial-up TIP and some PDP-10s at MIT, and I might not have noticed. There wasn't any kind of summer holiday shutdown at the university I was at, nor at NBS (where I was interning).
The grad-level computer networking course I was taking in early '82 mentioned ISO (we used Tannenbaum, recently published, as a base text). The professor pretty much threw his hands up at all the ISO layers. "This is not how you implement networking in real life."
There's a lot to like in IPV6, as well as some things to hate. Transitions remain difficult, but seem unavoidable (sooo much software smuggles IP addresses in 32-bit ints, and changing millions of lines of code and updating database schemas to match is not very much fun).
The grad-level computer networking course I was taking in early '82 mentioned ISO (we used Tannenbaum, recently published, as a base text). The professor pretty much threw his hands up at all the ISO layers. "This is not how you implement networking in real life."
There's a lot to like in IPV6, as well as some things to hate. Transitions remain difficult, but seem unavoidable (sooo much software smuggles IP addresses in 32-bit ints, and changing millions of lines of code and updating database schemas to match is not very much fun).