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Operating System Design Volume 2: Internetworking with XINU, 1987. ISBN 0-13-637414-X 025

Shows how to add IP/UDP to a simple Unix-like OS. You might want to also read volume 1:

Operating System Design - The XINU Approach, Second Edition, 2015. ISBN 9781498712439

https://www.cs.purdue.edu/homes/comer/osbooks.html

Ah, right. There is a part about it there. Worth mentioning indeed. Not as detailed "meditation" about topic of networking stack and interconnections with kernel and possibilities of designing kernels around it, but still worth mentioning. Thank you!

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