why the tcp link can't established?

[jywang]

Hi
    i change the skb when the tcp connect to aother. i mean,
i add a ip_options which include a source route in it.
reset the inet_sk(sk)->saddr to zero and reroute it.
all this done in a NF_IP_LOCAL_OUT hook.

the result is, when the host receive a ACK+SYN, a new
SYN is sent, it should be a ACK instead.

why?




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