[ale] Routing question (newbie alert!!)

[Joseph A Knapka]

Joe Steele wrote:
> 
> On Monday, May 06, 2002 3:54 PM, Joseph A Knapka wrote:
> >
> > The DHCP stuff shouldn't matter, as DHCP is not an IP
> > protocol (hosts participating in a DHCP dialog presumably
> > don't yet have an IP address.) DHCP conversations travel
> > in raw Ethernet frames without an IP header.
> 
> Umm... I don't think so.  From RFC 2131:
> 
>    DHCP uses UDP as its transport protocol.  DHCP messages from a client
>    to a server are sent to the 'DHCP server' port (67), and DHCP
>    messages from a server to a client are sent to the 'DHCP client' port
>    (68). A server with multiple network address (e.g., a multi-homed
>    host) MAY use any of its network addresses in outgoing DHCP messages.
> 
>    ...
> 
>    DHCP messages broadcast by a client prior to that client obtaining
>    its IP address must have the source address field in the IP header
>    set to 0.
> 
> You're probably confusing it with ARP.

Not confusing, just falsely presuming similarities. I've
never read the DHCP RFC, I just assumed it would work
at the link layer, silly me ;-)

> --Joe

Likewise.

-- 
    Any OS distinguishable from Windows is not sufficiently broken.

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