On 01/01/2017 13:25, Randy Bush wrote: >>>> Android users can complain to whoever it is that supports Android. >>> for some silly reason, my customers don't think they pay me for >>> blame shifting. they just want things to work. >> Yes. So not implementing DHCPv6 might be a self-defeating decision >> by an operating system developer, don't you think? > > the developer in question is an ipv6 purist. shooting himself in the > foot and the customers at the same time. it's an ipv6 tradition. > >>> and, let me repeat for the fourth time, enterprises of scale use dhcp >>> to drive clients to the desired exit. >> Excuse my ignorance, but which DHCP options does that involve? > > code 3 in v4, router option. folk use it to cause subsets of the space > to take different exits. Thanks, I was wondering whether you meant something more subtle than that. And yes, things like draft-ietf-mif-dhcpv6-route-option and draft-sarikaya-dhc-dhcpv6-raoptions-sadr have a sad history of being trampled. In fact I haven't changed my mind since 2012: https://mailarchive.ietf.org/arch/msg/mif/B6NCyw2y2O6I112TQJp_pcN_OoM >>> dhcp6 does not let them do that. without feature parity we don't get >>> to play. >> Which is why I think RFC 8028 has value. It's intended to support >> exit selection via first-hop selection. > > that is not feature parity. that is yet one more ipv6 'feature' that is > just different for religious reasons. It's a solution that will work the same for SLAAC-derived and DHCPv6-derived host addresses (and for manually assigned host addresses, for that matter), so I don't think that is very fair. I agree that it moves the necessary config magic from the DHCP(v6) screen to the router screen, but the logical result is the same. Given the lemons available, it seems like a reasonable lemonade recipe. However (see above) I baiscally agree with you. When MIF was first proposed I said "all we really need is a default router per prefix" and IMNSHO that's still true. > instead of giving the customer > what they want, we invent shiny new stuff and wonder why they walked > away. it must be that they are stupid. Hardly, but they are sometimes a bit set in their ways. Change costs money. Brian