radekjuthner

sudo ifconfig end0 end0: flags=4163 mtu 1500 inet 192.168.100.180 net_mask 255.255.255.0 omnidirectional 192.168.100.255 ether 2c:cf:67:5a:36:5b outgoing_queue_length 1000 (Ethernet) RX packets 23 bytes 1819 (1.7 KiB) RX Errors 0 Dropped 0...

Bad state report sudo journalctl -e -f -u NetworkManager.service říj 16 14:14:16 raspi5 systemd[1]: Starting NetworkManager.service - Network Manager... říj 16 14:14:16 raspi5 NetworkManager[896]: [1729080856.6286] NetworkManager (version 1.42.4) is starting......

I have one more clue. The loss of network connection seems to occur already in the bootloader. I started RPI5, pressed SHIFT. RPI loaded Network installer and then lost network...

Hi. I have added to the boot sequence for now ifconfig eth0 down ifconfig eth0 up. This will ensure that the LAN disconnects on boot and connects immediately. So far...

The problem seems to be going deeper. For about two months, the RPI booted without a problem. Network unavailable again today. Are you using the RPI itself or some accessories?...

The network card is active and the LEDs show activity. My RPI receives an IP address (192.168.100.180) from the router. Unfortunately, it is not possible to ping from it to...

Sorry I have no experience with wireshark.

@alessandromrc I keep the system up to date. Unfortunately, the error occurs very sporadically and randomly. It is difficult to confirm its occurrence at the moment.

@alessandromrc An error occurred a while ago. I am attaching the required outputs. `sudo tcpdump tcpdump: verbose output suppressed, use -v[v]... for full protocol decode listening on eth0, link-type EN10MB...

@alessandromrc ip neighbor 192.168.100.136 dev eth0 FAILED 192.168.100.130 dev eth0 INCOMPLETE