> # man 7 ip
> ..
> Note that TCP has no error queue; MSG_ERRQUEUE is
> illegal on SOCK_STREAM sockets. Thus all errors are returned by
> socket function return or SO_ERROR only.
>
> Maybe the man page is wrong? That's from my FC 3 install.
The sentence is correct, but TCP has a IP_RECVERR that works
differently without a queue. Basically it doesn't delay the error
reporting for incoming ICMPs to the last retransmit, but reports
them immediately. This is documented in tcp(7)
-Andi
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