Shivlu,
One solution would be to selectively add the vpn red route-target extended community to this specific route in the vrf internet using an export-map. This way you would have only one router to touch. It would go something like this.
ip vrf internet
rd
export map test
route-target export
route-target import
!
route-map test permit 10
match ip address 10
set extcommunity rt additive
!
access-list 10 permit
!
Refer to the following document for more information on export-maps.
http://www.cisco.com/en/US/docs/ios/12_3t/ip_route/command/reference/ip2_c1gt.html#wp1123631
Regards,
Regards,
Harold Ritter, CCIE #4168 (EI, SP)