On Thu, 17 Jul 2003, Francis Dupont wrote: > - hosts are able to verify that the redirect comes from the link-local > address the host is currently using as its next-hop > > The latter is a bit problematic. How could the host know this in the case > where the next-hop has been configured using e.g. a _global_ (but on-link) > address? > > What's the deal here? > > => I agree RFC 2461 expects the next-hop is always characterized by its > link-local address (as it is on a shared link it always has one). > There are some implementations which enforce the use of link-local > addresses but I agree that global addresses are not forbidden, or > the use of more than one link-local address...
Note that this also happens if you'd like to use an anycast address as the nexthop: even in the link-local scope, e.g. fe80::. (I'm not sure whether these are realistic scenarios or not..) > BTW I don't believe > a host is required to redirect its packets. You mean, host is not required to respond to redirects sent by the routers? -- Pekka Savola "You each name yourselves king, yet the Netcore Oy kingdom bleeds." Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
