I don't think it's generally available and requires a factory reset to run but if you're on a new beta that adds in a fixed DHCP option 61, please try the telnet command and see if that gives that load of syntax rather than something like 20020203?

OK, telnet gives me the same options that you have seen on the 2860 you had access to. not sure how i remove the option 60 from here though :?

cool I think removing it will be hard, replacing it with the option 60 output from the sky router will be easier, especially if you've got a packet capture from it

yep, packet capture i have, tying to work the syntax out for the command though...

Managed to have a play today with this, no further luck though.

Thos options when you telnet in dont work as expected.

I can edit what the option 60 is doing, and enter the string that my Sky router outputs, but this still doesnt allow me to authenticate. Wireshark shows the string coming out in option 60

I cant delete or disable option 60, tried that, and it still appears!

Not sure if the sequence of the dhcp options is significant. Option 60 is close to the top on my draytek trace, but further down on the sky router

Sent some more info off to Draytek, see what they come back with....

That's a shame Very weird that it still won't work even matching option 60 though