Martian 0.0.0.0 Packets identified ESP8266 Tasmota

 Hi,

recently i stumbled over a tremendous amount of Log entries:

kernel: IPv4: martian destination 0.0.0.0 from XXX.XXX.XXX.XXX , dev eth0

I tracked the Ip down to a tasmota esp8266 device. Alle Networ settings were correct. However, the Syslog  logging was switched to something > 0 and no host was given. 

So every message went to 0.0.0.0 I suppose.

Switched logging to 0 and martian packets were gone.

The following debugging might help if this does not solve your issue:
tcpdump -i eth0 host XXX.XXX.XXX.XXX

The following was logged: IP XXX.XXX.XXX.XXX.55246 > 0.0.0.0.syslog: SYSLOG local0.info

Windows7 / Vista / Server2008 unidentified network

Although a network consisting of a switch and 2 computers would be considered as very private, Win7(aso.) will consider it as unidentifiable and will not allow you to set the network to private.
Here's a howto on solving this issue:

1. Start –> run –> MMC –> press enter

2. In MMC console , from menu file select Add/Remove Snap-in

3. Select Group Policy Object editor –> Press Add –> select Local computer –> press OK –>press OK

4. Open Computer configration –>Windows Settings –>Security Settings –>select Network list manager policies
on the right Side you will see options:
double click –>Unidentified networks

5. Then you can select the option to consider the Unidentified networks as private and if user can change the
location


Source