On 13/10/2016 21:14, Lorenzo Colitti wrote: > Of note is the fact that the ULA prefix being announced is the ubiquitous > fd00::/64.
0 is a perfectly random number, just like the ubiquitous PIN code 1234. But yes, this a sloppy job by the FritzBox. Hopefully they've fixed this in more recent models. > Great idea, ULAs. In the right circumstances, yes, actually. And actually my circumstances yesterday were right for a ULA prefix: the ISP failed to give my CE a prefix. Today, they gave me a prefix, and so Linux gives me a default route. Brian > > On Wed, Oct 12, 2016 at 9:16 PM, Brian E Carpenter < > brian.e.carpen...@gmail.com> wrote: > >> This creates a tricky problem for homenet, I think, but I agree that my CE >> is doing what that requirement says. This also creates a truly annoying >> coding problem for me, which I won't go into here (except to gripe that >> Linux >> makes it very annoying indeed to discover your own global unicast address). >> >> Thanks >> Brian >> >> On 13/10/2016 16:55, Lorenzo Colitti wrote: >>> The linux host is correctly not adding a default route because the RA >>> specifies a router lifetime of 0, likely due to RFC 7084 requirement G-4. >>> >>> On Wed, Oct 12, 2016 at 8:25 PM, Brian E Carpenter < >>> brian.e.carpen...@gmail.com> wrote: >>> >>>> I'll send you the RA packet off-list. >>>> >>>> Brian >>>> >>>> On 13/10/2016 14:10, Brian E Carpenter wrote: >>>>> On 13/10/2016 13:47, Lorenzo Colitti wrote: >>>>>> On Wed, Oct 12, 2016 at 5:39 PM, Brian E Carpenter < >>>>>> brian.e.carpen...@gmail.com> wrote: >>>>>> >>>>>>> But what it says (before I install the correct default route) is >>>>>>> >>>>>>> fd00::/64 via fe80::be05:43ff:fe8e:ce39 dev wlp2s0 proto ra metric >>>> 600 >>>>>>> pref medium >>>>>>> fe80::/64 dev wlp2s0 proto kernel metric 256 pref medium >>>>>>> >>>>>>> No default, as you can see. >>>>>>> >>>>>> >>>>>> Do you have a tcpdump of the RA? >>>>> >>>>> No. Any suggestions how I can catch one? Would a Wireshark capture be >>>> useful? >>>>> >>>>> Brian >>>>> >>>> >>> >> >