>I think this is actually OK. When the SYN arrives, it must be
>accepted, as you quoted ...
> IP and higher layers (e.g., TCP, UDP) MUST
> continue to accept datagrams destined to a deprecated address
i think the sentence lacks "for existing connection" at the end.
>After that, TCP processes the incoming connection. That makes existing
>communications. Then, when replying, the SYN+ACK can be sent from the
>address to which it was sent (deprecated or not). So, I doubt there's
>actually a problem there.
TCP SYN is definitely an indication of a new connection.
itojun
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