[Samba] process_lanman_packet: Discarding datagram from IP 192.168.100.29. Source name STORAGE7<00> is one of our names !

[Jeremy Allison]

On Tue, Jan 05, 2016 at 11:48:32PM +0100, Torkil Svensgaard wrote:
> Hi
> 
> I have a bunch of FreeNAS servers and a TrueNAS HA server all
> spamming the logs with these messages every minute about their own
> source name (examples below).
> 
> These boxes are on two physically separate networks, and I find it
> unlikely both networks should have some sort of undetected loop. Any
> ideas on how to debug this? Samba version is 4.1.18.
> 
> FreeNAS box on network A
> "
> Jan  5 23:17:43 storage7 nmbd[18901]: [2016/01/05 23:17:43.054231,
> 0] ../source3/nmbd/nmbd_packets.c:1174(process_lanman_packet)
> Jan  5 23:17:43 storage7 nmbd[18901]:   process_lanman_packet:
> Discarding datagram from IP 192.168.100.29. Source name STORAGE7<00>
> is one of our names !
> "
> 
> TrueNAS active node network A
> "
> Jan  5 23:17:43 storage8 nmbd[21114]: [2016/01/05 23:17:43.052040,
> 0] ../source3/nmbd/nmbd_packets.c:1174(process_lanman_packet)
> Jan  5 23:17:43 storage8 nmbd[21114]:   process_lanman_packet:
> Discarding datagram from IP 192.168.100.36. Source name TRUENAS1<00>
> is one of our names !
> "
> 
> FreeNAS box on network B
> "
> Jan  5 23:17:32 storage4 nmbd[34068]: [2016/01/05 23:17:32.086480,
> 0] ../source3/nmbd/nmbd_packets.c:1174(process_lanman_packet)
> Jan  5 23:17:32 storage4 nmbd[34068]:   process_lanman_packet:
> Discarding datagram from IP 172.21.140.17. Source name STORAGE4<00>
> is one of our names !
> "

Are you forwarding broadcasts ? This is a debug level 0 log
coming from process_lanman_packet() telling you you have a
badly configured network :-).

You can fix the network, or recompile making the error
message a higher debug level than zero (which to be
honest is probably too low for this condition).