Technical Summary
The IP Router Alert Option is an IP option that alerts transit
routers to more closely examine the contents of an IP packet. RSVP,
PGM, IGMP/MLD, MRD and GIST are some of the protocols that make use
of the IP Router Alert option. This document discusses security
aspects and usage guidelines around the use of the current IP Router
Alert option. Specifically, it provides recommendation against using
the Router Alert in the end-to-end open Internet as well as identify
controlled environments where protocols depending on Router Alert can
be used safely. It also provides recommendation about protection
approaches for Service Providers. Finally it provides brief
guidelines for Router Alert implementation on routers.
Working Group Summary
The normal WG process was followed and the document as it stands now
reflects WG consensus with nothing special worth mentioning.
Document Quality
The document was given adequate reviews. The Document Shepherd has
no concerns about the depth or breadth of these reviews.
Personnel
The document shepherd is Julien Laganier. The responsible Area Director is
Ralph Droms.