Moin, i just gave the draft a read; Some comments:
# Generally - Use RFC5398 ASNs; I doubt that Level3, The University of Delaware, or the MIT should be explicitly mentioned in a draft. - Illustrate the examples with RFC3849 / RFC9637 addresses # Role of DNAT My understanding of the draft is, that it describes a method to measure OSAV in "AS2", originating packets from "AS1" and collecting them in "AS3". >From my reading, the proposal is rooted in the assumption of a DNAT being present in "AS2". I would argue that this is not a general given and as such similar to the use of a volunteer. # Role of topology Even assuming that a DNAT device is readily available, inferring source address validation would require that there is _no_ reasonable path for packets from "AS1" to "AS3" via "AS2", i.e., "AS1" must not be in "AS2"'s cone. That is currently not discussed in the draft. With best regards, Tobias On Mon, 2024-11-25 at 14:46 +0800, Shuai Wang wrote: > > Dear all, > I hope this message finds you well. We are happy to share a new > draft named "draft-wang-savnet-remote-measurement-osav-00". This > draft proposes a method to remotely measure the deployment status of > Outbound Source Address Validation (OSAV) without the cooperation of > volunteers in the remote network. This remote measurement of OSAV > deployment provides a practical way to effectively measure a large > number of ASes. > The proposed method can measure whether OSAV is deployed in the > remote network, i.e., whether OSAV is present or absent. In addition, > it can measure the filtering depth and granularity, i.e., the > farthest hop to which a spoofed packet can be transmitted, and the > shortest prefix length between the real IP address and the spoofed > address that is not blocked. These metrics were previously available > only by volunteer-based approaches, like Spoofer. > We welcome your feedback and discussions on this draft. The > draft can be accessed directly via the following link: > https://datatracker.ietf.org/doc/draft-wang-savnet-remote-measurement-osav/ > Best, > Shuai Wang > > wangsh...@mail.zgclab.edu.cn > _______________________________________________ > GROW mailing list -- grow@ietf.org > To unsubscribe send an email to grow-le...@ietf.org -- Dr.-Ing. Tobias Fiebig T +31 616 80 98 99 M tob...@fiebig.nl _______________________________________________ GROW mailing list -- grow@ietf.org To unsubscribe send an email to grow-le...@ietf.org
