[j-nsp] "ping: sendto: Operation not permitted" in LAN

Saku Ytti saku at ytti.fi
Thu Aug 18 15:18:07 EDT 2011


On (2011-08-18 10:28 -0400), Stefan Fouant wrote:

> established. This can cause strange behavior since it's only looking
> for it a simple bit match against the TCP ACK or RST fields.
> However because you are not tying it specifically to TCP traffic,
> any packets which have a 1 value at that offset will match.

Trio appears to change this, in inet6 simply doing 'match port X' without
'match next-header tcp|udp' correctly finds port X, regardless of its position
in the frame (you can move the UDP/TCP port position via extension headers).

-- 
  ++ytti


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