[Ninux-Wireless] [Olsr-dev] Strange debug message from olsrd

Gioacchino Mazzurco gmazzurco89 a gmail.com
Ven 8 Ott 2010 14:44:12 CEST 

mmm it seems we are not using buggy driver because our node are ubiquity
picostation with madwifi, moreover we have the same message from eth0 (
wired interface ) ... and not seems we have loop in every node... and now
mdns is disabled and we continue to have the same message... here is the
realtime topology:
http://131.114.250.100/status.php
http://131.114.250.100:2006/


2010/10/8 Markus Kittenberger <Markus.Kittenberger a gmx.at>

> this is a warning that olsrd received the exactly same packet from one of
> its neighbor more than once,..
> infact olsrd received a packet with an seqnr which is identical to the
> previous packet,..
>
> known cause for example is the buggy wireless driver of routeros (if u use
> for example use wds links (with bad signal) between mikrotik routerboards
> you will get duplicate packets seldomly)
> or maybe you built a layer 2 loop, or found another buggy hardware/device
> driver,..
> mdns might also produce duplicates
>
> btw: olsrd versoins that report this, are not affected by duplicate olsr
> packets (they ignore the duplicate), but older olsrd versions interprete a
> duplicate packet as extreme packet loss (65535 packets lost *G) and will set
> the links lq to 0,...
>
> as you get many erros of this type, i recommend to find out what causes it,
> as other software may also react bad on duplicates
>
> Markus
>
> On Fri, Oct 8, 2010 at 10:46 AM, Gioacchino Mazzurco <
> gmazzurco89 a gmail.com> wrote:
>
>> Hey all on our network in Pisa we are using olsrd from stable branch,
>> today reading the output of logread command i have found a lot of olsrd
>> related message here is a short piece:
>>
>> Jan  2 16:31:20 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 32869 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)
>> Jan  2 16:31:21 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 54141 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (80 Bytes)
>> Jan  2 16:31:21 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 10366 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)
>> Jan  2 16:31:21 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 57171 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)
>> Jan  2 16:31:22 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 32870 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)
>> Jan  2 16:31:23 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 54142 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (148 Bytes)
>> Jan  2 16:31:23 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 10367 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (160 Bytes)
>> Jan  2 16:31:23 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 57172 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (216 Bytes)
>> Jan  2 16:31:24 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 32871 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (188 Bytes)
>> Jan  2 16:31:24 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 54143 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (80 Bytes)
>> Jan  2 16:31:25 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 57173 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)
>> Jan  2 16:31:25 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 10368 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (112 Bytes)
>> Jan  2 16:31:25 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 32872 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)
>> Jan  2 16:31:26 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 54144 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (80 Bytes)
>> Jan  2 16:31:26 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 57174 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)
>> Jan  2 16:31:27 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 10369 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (104 Bytes)
>> Jan  2 16:31:27 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 32873 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (188 Bytes)
>> Jan  2 16:31:28 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 54145 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (148 Bytes)
>> Jan  2 16:31:28 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 57175 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (216 Bytes)
>> Jan  2 16:31:29 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 10370 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (168 Bytes)
>> Jan  2 16:31:29 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 32874 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)
>> Jan  2 16:31:30 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 54146 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (80 Bytes)
>> Jan  2 16:31:30 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 57176 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)
>> Jan  2 16:31:30 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 32875 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)
>> Jan  2 16:31:30 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 10371 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (104 Bytes)
>> Jan  2 16:31:31 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 54147 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (148 Bytes)
>> Jan  2 16:31:32 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 57177 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (160 Bytes)
>> Jan  2 16:31:32 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 32876 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (188 Bytes)
>> Jan  2 16:31:32 OpenWrt daemon.info olsrd[705]: detected duplicate packet
>> with seqnr 10372 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (168 Bytes)
>>
>> here is our topology http://131.114.250.100/status.php
>> the node is fd7d:d7bb:2c97:dec3:0:15:6dfc:720b
>>
>> but i find the same message on all node of network...
>> here is our typical configuration
>>
>>
>> DebugLevel      1
>>
>> IpVersion       6
>>
>> LoadPlugin "olsrd_txtinfo.so.0.1"
>> {
>>   PlParam     "Accept"   "0::0"
>> }
>>
>> LoadPlugin "olsrd_mdns.so.1.0.0"
>> {
>>   PlParam     "MDNS_TTL"  "10"
>>
>>   PlParam     "NonOlsrIf" "ath0"
>>   PlParam     "NonOlsrIf" "eth0"
>> }
>>
>> Hna6
>> {
>>     0::ffff:0000:0000 96
>>     0::ffff:0afe:0000 112
>>     0::ffff:0aaf:0000 120
>> }
>>
>> Interface "ath1"
>> {
>>     Mode "mesh"
>>     IPv6Multicast       FF0E::1
>>     IPv6Src             fd7d:d7bb:2c97:dec3:0000:0015:6DFC:720B
>> }
>>
>>
>> Interface "eth0"
>> {
>>     Mode "ether"
>>     IPv6Multicast       FF0E::1
>>     IPv6Src             fd7d:d7bb:2c97:dec3:0000:0015:6DFD:720B
>> }
>>
>>
>> debug level is set to 1 but forced to 0 by -d param on our custom olsrd
>> starting script
>>
>>
>> --
>> Olsr-dev mailing list
>> Olsr-dev a lists.olsr.org
>> http://lists.olsr.org/mailman/listinfo/olsr-dev
>>
>
>
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