Hi, > On 23 Feb 2025, at 13:52, A FreeBSD User <free...@walstatt-de.de> wrote: > > Am Fri, 21 Feb 2025 10:44:12 +0000 > Bob Bishop <r...@gid.co.uk> schrieb: > >> Hi, >> >>> On 21 Feb 2025, at 06:52, A FreeBSD User <free...@walstatt-de.de> wrote: >>> >>> Hello, >>> >>> Linux (especially OpenWRT we use) knows about a concept named "IPv6 >>> tokenized interface >>> identifier". The concept is self explanatory, a interface/router obtains a >>> propagated >>> prefix and the concept allows the explicit definition of the host portion. >>> >>> I haven't managed to accomplish such a behaviour using FreeBSD's rtadvd(8) >>> daemon. I guess >>> this task is subject of and performed through the rtadvd.conf(5) >>> configuration file, but I >>> haven't managed yet to accomplish such a task (to speak simple: I'd like to >>> have a router >>> of a subnet always at IPv6 Network PREFIX:0:0:0:1). >> >> Isn’t sufficient just to give the router a static IPv6 address? That’s what >> we do here. > > Hello. > > The router itself has on all inbound NICs static ULAs, ending as desired on > "fc:/7-PREFIX::1". > Using KAME dhcp6c,
Ah. Nothing good will happen if you mix DHCP6 and SLAAC. > software from 2008(!), with a configuration obatined for delegating a > prefix, each NIC - except tun0 for whatever reason - gets a prefix, the > inbound NICs then seem > to get a EUI64 generated IPv6 (although I sepcified "privacy", but this seems > to be > ignored, sadly ...). > >> >>> The only config tag I can imagine is responsible for what I'd like to >>> achive is the "addr" >>> tag mentioned in rtadvd.conf(5), but whatever I fill this tag with - the >>> desired effect is >>> never achived (i.e addr="::0.0.0.1"). My "FreeBSD homebrewn" router has >>> several networks, >>> attached to vlan. Each interface is subject of an ULA prefix and an IPv6 >>> prefix provided >>> by our ISP. It is possible to pin the ULA toward the desired address, like >>> addr="fd50:c450::1", but then the ISP provided prefix seems not to be set >>> properly or is >>> completely absent. Omitting "addr=" provides the interface with ULA prefix >>> and ISP prefix >>> - but obviously with the randomly generated 64bit host portion. >>> >>> Playing around with mutually suitable tags, like "pinfoflags", "raflags" or >>> "rtflags" and >>> having probed almost every possible combination (with or without some >>> sense), it seems >>> impossible to provide a) both ULA and ISP prefix pin the host portion to a >>> desired 64bit >>> address, like "PREFIX::1". >>> >>> I do not exclude that I'm possibly incapable of comprehension the manpage >>> (the language is >>> and the deeper semantics seem then to be hidden for me). So, if there is a >>> clear >>> expalanation how to achive the desired, please point me towards it (thanks >>> in advance!). >>> >>> Linux has this feature since a while and I can not believe that FreeBSD >>> lacks such a >>> feature. >>> >>> Thank you very much in advance, >>> >>> O. Hartmann >>> >>> >>> -- >>> >>> A FreeBSD user >> >> -- >> Bob Bishop >> r...@gid.co.uk >> >> >> >> > > > > -- > > A FreeBSD user -- Bob Bishop t: +44 (0)118 940 1243 r...@gid.co.uk m: +44 (0)783 626 4518
