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 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... _______________________________________________ Cerowrt-devel mailing list [email protected] https://lists.bufferbloat.net/listinfo/cerowrt-devel
