>>> It's not difficult to find even home users with multiple ISP >>> links. Both ISP's send RA's with different prefixes (A=1). >>> >>> Host sees now two default routers on link and will have multiple >>> global addresses. By current rules, host can use either router for >>> outgoing packets regardless of the selected source address. >> >>Not necessarily true. If the host implements the strong end system >>model, it will choose the outgoing route regarding the selected source >>address. > the host how to select the source address ,RFC3484 defines the source > address select rules, > but in generally it does not be implement in the pc os. Section 3.2.1.2 of draft-ietf-mif-current-practices-00, "Windows implements [RFC3484] for source address selection in IPv6 and, in Windows Vista, for IPv4". Thanks for discussion. >> >>> >>> I think it would be more sensible to pick the default router from the >>> set of routers that actually advertised the prefix matching the >>> selected source address? >>> >>> This would be a simple way to avoid hitting the filters of the ISP's, >>> when wrong source address (for that ISP) is used. >>> >>> The IPv6 architecture assumes all routers on link "co-operate", but I >>> think that is too much to expect from simple "home routers", the ISP >>> would be supplying... it's better to put some intelligence into host >>> requirements? >>> >>> -- >>> Markku Savela >> _______________________________________________ >> mif mailing list >> mif at ietf.org >> https://www.ietf.org/mailman/listinfo/mif >> > > > > > ________________________________ > "雪见"杨幂邀你共品3D国韵网游《天下贰》，海报免费领
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