[c-nsp] A.B.C.D is assigned as a secondary interface on Vlan1

[Cory Ayers]

>For various reasons, after acquiring a network from another telecom, we
have a need to fracture a /24 over a couple of vlans on the same router
(6509, sup720-3bxl, 122-18.SXF14).  We have a /30 assigned to vlan 1 as
a
secondary address.  When attempting to apply A.B.C.D/25 to another vlan,
it reports the above error.

You can static route a more specific network to another interface, but
you can't bind overlapping networks on the same router in the same
routing context.  Can you use static routes or put an interface
overlapping networks inside a VRF?