Ok, ignore my previous mail. The solution is to use -soii: # ifconfig em0 autoconf eui64 -soii lladdr f2:b6:71:e6:11:7e
This makes the non temporary public and ULA addresses use the EUI-64 IID based on the lladdr. Thanks! Mike > Am 29.12.2021 um 19:37 schrieb Mike Fischer <[email protected]>: > > On Tue, Dec 28, 2021, at 21:05, Mike Fischer wrote: >>> Am 28.12.2021 um 13:09 schrieb Paul de Weerd <[email protected]>: >>> Seems like the simplest way, especially using the lladdr option. >> Yes, I’ll give that a try. > > Ok, I have tried the following: > > Remove my current IPv6 configuration from em0: > # ifconfig em0 -inet6 > Test the new configuration: > # ifconfig em0 inet6 autoconf eui64 lladdr f2:b6:71:e6:11:7e > > This results in: > - The interface em0 has the expected lladr of f2:b6:71:e6:11:7e > - The link local IPv6 address is: fe80::f0b6:71ff:fee6:117e (using the > modified EUI-64 version of the lladdr) as expected > - The public IPv4 IPs use my current prefix and a random IID, no relation to > the lladdr: 2001:db8::eb7f:1267:44d0:45a4 (*) > - The ULA addresses behave the same as the public ones, i.e. the IID has not > relation to the lladdr. > > Why is (one of) the public addresses not using the EUI-64 method of > generation the IID? > > I realize that autoconf generates the SOII addresses with random IIDs. But > shouldn’t the eui64 option also create an IP with the modified EUI-64 as the > IID? > > ifconfig(8) states: > eui64 Fill the interface index (the lowermost 64 bits of an IPv6 address) > automatically. > > Which is kind of a bland statement anyway. It should IMHO reference that a > modified EUI-64 is used. But it does not say that this is only true for the > link local address. > > > If have tried changing the order of the parameters, but it makes no > difference: > ifconfig em0 inet6 autoconf lladdr f2:b6:71:e6:11:7e eui64 > ifconfig em0 inet6 lladdr f2:b6:71:e6:11:7e eui64 autoconf > > I have also tried to do this without the lladdr parameter, same results just > with a different lladdr. > > If I leave out the autoconf parameter I only get a link local address. > > > *) I have substituted 2001:db8:: for the real public prefix here. > > > Thanks! > > Mike
