it was a typo sorry for the confusion.
My router would indeed offer to chage the DHCP range if it could or reject the mask if I tried it as shown.

Edited by deleted (Wed 05-Dec-12 10:07:05)

Looks like there may be an answer to my problem...here

Need to study it in detail but it looks as if its separating out the ppp and eth0 at first galnce, as suggested earlier in this thread.
I'll let you know how it goes.

BTW: I emailed Draytek to see if the Vigor 120 supported this but they came back with the suggestion of putting a switch between the modem and router and connecting the switch to both WAN and LAN ports on router and having the modem on the same LAN segment as the router. Surely a firewall issue??

Edited by deleted (Wed 05-Dec-12 10:21:49)

Post deleted by billford

Advertising is not permitted.

I can confirm that the solution I refered to in my previous post works fine