On Fri, Mar 10, 2017 at 4:45 PM, Ewoud Kohl van Wijngaarden <ew...@kohlvanwijngaarden.nl> wrote: > On Fri, Mar 10, 2017 at 02:40:04PM +0000, Dmitri Dolguikh wrote: >> After thinking about support for ipv6 + dhcpv6 in smart-poxy and >> Foreman some more, I realized that: >> >> - while host duid management is possible, it’s going to be somewhat >> involved (quite a few different scenarios) and possibly fragile > > If I understand it correct then RFC6939 allows you to use the MAC > address as well. Given this is very close to the IPv4 implementation I > believe this is what should be explored first. >
Option 79 is used to specify client link-layer address, but it requires that either: - dhcp client populate the option, or - first hop dhcp relay populates the option Which isn't guaranteed. For example neither NetworkManager nor dhclient generate this option by default. > ISC dhcpd 4.3 support this and Debian Jessie ships it, but EL7 doesn't. > > Do I understand it correct that besides DUID vs MAC the OMAPI protocol > doesn't support setting IPv6 addresses? Correct. > >> - dhcp servers can be configured to update dns records automatically >> using hostname (and domain name, if required) that client passes with >> dhcp request (or names can be generated automatically) > > While possible, I'm not sure how many people use this in a datacenter > context. Neither do I. Would be interesting to learn. > >> - Foreman's main requirement is to set correct pxe boot options for >> managed hosts > > Correct, it's good not to lose focus on this to keep the scope small. > >> - multiple dhcp servers can co-exist on the same network/network >> segment, with responses selected by the client based on server >> precedence >> >> This leads me to think that having a small dhcp server (that we can >> interface with using a convenient set of api) dedicated to handling >> pxe requests in a given network segment and ignoring all request is an >> option that’s worth investigating. Turns out google has a project that >> fits the bill (https://github.com/google/netboot). I’m trying to >> establish a contact with project’s maintainers to find out about >> dhcpv6 state (not currently implemented) and see if they need help. > > Also note that it should be packaged. Nods. -d -- You received this message because you are subscribed to the Google Groups "foreman-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to foreman-dev+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
