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. > 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
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