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, 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
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