A new Request for Comments is now available in online RFC libraries. RFC 1393: Title: Traceroute Using an IP Option Author: G. Malkin Mailbox: gmalkin@Xylogics.COM Pages: 7 Characters: 13,140 Updates/Obsoletes: none Traceroute serves as a valuable network debugging tool. The way in which it is currently implemented has the advantage of being automatically supported by all of the routers. It's two problems are the number of packets it generates and the amount of time it takes to run. This document specifies a new IP option and ICMP message type which duplicates the functionality of the existing traceroute method while generating fewer packets and completing in a shorter time. This memo defines an Experimental Protocol for the Internet community. Discussion and suggestions for improvement are requested. Please refer to the current edition of the "IAB Official Protocol Standards" for the standardization state and status of this protocol. Distribution of this memo is unlimited. This announcement is sent to the IETF list and the RFC-DIST list. Requests to be added to or deleted from the IETF distribution list should be sent to IETF-REQUEST@CNRI.RESTON.VA.US. Requests to be added to or deleted from the RFC-DIST distribution list should be sent to RFC-REQUEST@NIC.DDN.MIL. Details on obtaining RFCs via FTP or EMAIL may be obtained by sending an EMAIL message to "rfc-info@ISI.EDU" with the message body "help: ways_to_get_rfcs". For example: To: rfc-info@ISI.EDU Subject: getting rfcs help: ways_to_get_rfcs Requests for special distribution should be addressed to either the author of the RFC in question, or to NIC@NIC.DDN.MIL. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. Submissions for Requests for Comments should be sent to RFC-EDITOR@ISI.EDU. Please consult RFC 1111, "Instructions to RFC Authors", for further information. Joyce K. Reynolds USC/Information Sciences Institute