[Babel-users] babels bug with uninitialized data somewhere?

Juliusz Chroboczek jch at pps.univ-paris-diderot.fr
Fri Jun 27 18:39:02 UTC 2014


> the two captures are at: http://snapon.lab.bufferbloat.net/~cero2/babcap/

There's nothing obviously wrong.  Here's an example of a source-specific
TLV (the one at time 06:20.362230 in the wifi capture):

  0d 16 02 20 00 00 06 40 65 8a 00 e0 40 00 20 01 04 70 82 36 02 61 02 00 

  Type = 0d (13)
  Length = 16 (32)
  AE = 02
  Flags = 20
  Plen = 00
  Omitted = 00
  Interval = 0640 (16s)
  Seqno = 658a
  Metric = 00e0 (224)
  Prefix = (empty) (::)
  Src Plen = 40 (64)
  src Omitted = 00
  src Prefix = 20 01 04 70 82 36 02 61 (2001:0470:8236:0261:0261::)
  Sub-TLV: 02 00 (diversity empty)

Matthieu, do you have any ideas?

Other than that, nice network (you're probably the only person in the
world who thinks /27 is a round number).  I'm seeing some wildcard
diversity sub-TLVs, which means that you're mixing Babel-Z3 with plain
Babel, which can cause sub-optimal routing (the Z3 routers will tend to
avoid the plain routers).

-- Juliusz



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