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    It uses Watt-32 as TCP/IP stack under DOS. Never heard about it before. Looks like it’s feature-rich, however no ipv6 and it’s mostly targeted to DOS.

    Modern IoT systems usually use lwip, which probably can be ported to DOS too, and vice versa, maybe Watt-32 can be ported to embedded platforms.

    Are there other portable (i.e. independent of OS) TCP/IP stacks?