Please help: ptp links addresses

I don't remember exactly, but I am under the impression, that 
 I'v read somewhere that you can do something like the following
 on Cisco routers:
 1) Set an IP address (/32) to the loopback interface.
 2) Tell the router that all ICMP replies should be sent
     with this interface address.

( I have done it for TFTP & SNMP..)

If it is the case, with one address per router, You'll get 
 a fine traceroute reply.

Can someone confirm ?

     Regards,

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