tcp hostcache and ip fastforward for review

[Daniel C. Sobral]

Andre Oppermann wrote:

> 
> Makes sense.
> 
> Can we ever have a packet that has a source address with INADDR_BROADCAST
> or IN_MULTICAST?  I can't think of such a case.
> 
> Can we ever have a packet with destination address INADDR_ANY?  Maybe
> for BOOTP? But then the source address would be 0.0.0.0 too?

IIRC, in case you have an IP-less interface and you want to subscribe it 
to some multicast address, the outgoing packet source address is 0.0.0.0.

-- 
Daniel C. Sobral
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