Re: Packet cap diff... for classic dhcp over winxp s/w bridge prob.
From: Horst Knobloch (horschti2_at_gmx.de)
Date: Mon, 25 Apr 2005 21:54:57 +0200
Coenraad Loubser <firstname.lastname@example.org> wrote:
[DHCP + MS Bridging Problem]
> Nope, cant find anything on their site.
See posting from prg. Client Identifiers seems to be
the proper way to go when it comes to the MS-style of
> Just out of curiosity.. I never studied this; How does a normal bridge
> then know where to route a returning packet? with an IP its simple.. but
> if the return mac is not that of the bridge, how will the bridge receive
> it... it should at least change the packet mac, shouldnt it?
No. The bridge puts the ethernet interfaces in promiscous mode
(like tcpdump/ethereal). So it sees all eth. frames on the
ethernet segments and learns (via the source MAC address) on
which interface which MAC addresses are located. If it haven't
learned on which interface a given MAC address resides, it sends
the ethernet frame through all interfaces except the one on which
it was received.
-- »When pings go wrong (It hurts me too)« E.Clapton/E.James/P.Tscharn