On Wed, Nov 26, 2014 at 7:21 PM, Chuck Anderson <[email protected]> wrote: > On Tue, Nov 25, 2014 at 11:11:17PM -0800, Dave Taht wrote: >> Some days I just lose it with prefix math. Or maybe we have a bug. > > Prefix math, there is no bug. > >> So here is a default gateway. So far as I know it is getting a /56 >> actually, not a /60, but it is requesting a /60 and thus distributing >> a source specific route to that /60. > > Looks like a /60. > >> default from :: via fe80::201:5cff:ee62:b646 dev ge00 proto static metric >> 1024 >> # should I even have a default route at all? >> default from 2001:558:6045:e9:44a9:4a25:ece9:55c3 via >> fe80::201:5cff:ee62:b646 dev ge00 proto static metric 1024 >> # my uplink, looks sane >> >> default from 2601:c:ce00:9d0::/60 via fe80::201:5cff:ee62:b646 dev >> ge00 proto static metric 1024 >> # and see that /60... >> >> # and then there is the default ipv6 address assignements on cero. >> >> 2601:c:ce00:9d1::/64 dev gw10 proto kernel metric 256 expires 326362sec >> >> Now, where my brain crashes: shouldn't 2601:c:ce00:9d1::/64 actually >> be something like >> >> 2601:c:ce00:9d01::/64 not, 2601:c:ce00:9d1::/64? > > No, it is correct. The /60 is: > > 2601:c:ce00:9d0::/60 > > which is really this when expanded out (zero-pad each : section): > > 2601:000c:ce00:09d0::/60
You are absolutely correct. Thank you! > > > Now the 60 bit prefix is: > > 2601:000c:ce00:09dX:XXXX:XXXX:XXXX:XXXX > > where X is the part which can be assigned to your LANs. The first X > is a 4-bit nibble that was assigned "1" by Cero creating a /64 subnet > prefix, leaving the remaining 64 bits for your Interface IDs... It turned out that I had a non-source-specific babeld between me and it, also (bloody meshy routing!), which was messing things up. Worse, that is on a roof where I cant update it easily. Also I AM getting a /56 from a comcast business class account elsewhere on the net... but grokking hnetd is killing me. > _______________________________________________ > Cerowrt-devel mailing list > [email protected] > https://lists.bufferbloat.net/listinfo/cerowrt-devel -- Dave Täht thttp://www.bufferbloat.net/projects/bloat/wiki/Upcoming_Talks _______________________________________________ Cerowrt-devel mailing list [email protected] https://lists.bufferbloat.net/listinfo/cerowrt-devel
