AS_PATH manipulation

[Andy]

Hi All,   saw this on NANOG or cisco-nsp recently but can't find it again for the life of me....   I need to advertise routes such that it looks like I'm closer to an IXP/NAP than I really am - I need to strip an AS_PATH hop out of my BGP advertisments.   Say I'm AS1234 and upstream of me I have AS2345 (unlikely I know for those of you who know about AS# allocations - single digits are way more hardcore).  Is there a way of advertising an AS_PATH of "AS1234, AS2345, whatever", as "AS1234, whatever", so it appears that I am one AS hop closer to the IXP/NAP than I am?   I know there is a way to prepend a hop to the path to make it one AS hop longer, but I sort of need to do the reverse.  Believe there is a way in JUNOS but the IOS is teasing me once again....   Any help much appreciated as always   Andy