DHCP Relay + PPP (your mail)
dhcp at thehobsons.co.uk
Tue May 23 22:34:46 UTC 2006
Thinking more about this, things are even simpler that I first
thought - unless you know differently that is !
The relay agent has only one function, to receive broadcast packets
from clients which are forwarded to the dhcp server, and to broadcast
the returned packets. To deal with the broadcast packets requires
jumping through the hoops it does.
However, handling the packets from the dhcp server is surely a
trivial exercise - all that is required is to open the right port (67
or 68 ?) on any IP address(es) that the relay agent might use for the
GIAddr. The actual interface doesn't matter and probably isn't the
real interface that the packet arrives on from the server - you just
need to be able to receive a unicast packet to the GIAddr.
If done that way, then there would be no need to worry about the
technology of any upstream connections - only that of the client
networks. Also, the only configuration required would be the
network(s) to listen on for client broadcasts (and server
address(es)) - certainly no need to worry about how server reply
packets will arrive.
Have I missed something blindingly obvious ?
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