I find already for a couple of months multiple of these messages in the syslog and messages files.
Aug 14 21:21:53 rpi3 kernel: [20902.701844] IPv4: martian destination 0.0.0.0 from 192.168.178.33, dev wlan0
Aug 15 21:21:53 rpi3 kernel: [23902.701844] IPv4: martian destination 0.0.0.0 from 192.168.178.30, dev wlan0
Both IP-addresses (192.168.178.3) happen to be ESP32’s loaded with ESPhome and both configured as a BLE gateway.
I have over 50 or so IP components in the network, but it is these two that produce these “martian storms”.
I’m not a network expert, but all my network devices pickup the network configuration through DHCP (pihole), but for these 2 I also tried static IP, but that has no effect.
Anyone who has an idea ? Thank you, Yann