Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1986-2001 Microsoft Corp. C:\WINDOWS>netsh ras ipx set negotiation ?
set negotiation [mode = ] ALLOW|DENY
Specifies whether the RAS server will allow IPX to be configured for
any client connections it accepts.
mode - the mode
ALLOW - permit IPX over client connections.
DENY - do not permit IPX over client connections.