Because they are not using modem in bridge mode and
most routers default to WAN 
DHCP. I never refer to a DSL modem as nor use it as a
router.

line -> liveip -> wan ppoe client -> modem -> nat ->
lan dhcp server -> 
192.168.0.x -> wan dhcp client -> router -> nat-> lan
10.0.0.x static -> switch 
-> multiple clients

So from the router standpoint it's talking to a
192.168.0.x network on a dynamic 
IP NOT the live IP it should be seeing if you were on
in bridge mode, on a cable 
modem or otherwise connected directly to internet.

FORC5 wrote:
> not sure if this  helps or if I can explain it
correctly but I have a customer with one of those
modem/router deals. it is set up to DHCP to a router
which has it's LAN side all fixed 10.x.x.x.. while the
router comes in with 192.168.0.2 or something like
that. Not sure if that was configured or if the router
just grabbed what it was given by the modem.
> fp
> 
> At 10:56 AM 10/10/2007, DHSinclair Poked the stick
with:
>> Thanks Richard,
>> Yes, I plan to play this one out by the learning I
got from this List back in 99/00 
>> when setting up the 1st go-round.  Plan to treat
the modem as dumb and go from there.
>> Now, I am trying to figure out how to cancel my
current dial-up isp. May leave it 
>> active for a while more...... :)
>> Best,
>> Duncan
>>



      
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