Ubuntu Support Template
Ubuntu Version:
Example: 25.10 LTS
Desktop Environment (if applicable):
Example: GNOME
Problem Description:
Hello I’m having issues with my wired internet connection. It cuts out prompting me to restart my machine at random intervals, from a few hours to a few minuets. Please any advice?
What I’ve Tried:
List the solutions or workarounds you’ve already attempted.
Updates and cleaning the firewall and DNS rules
You can try checking the system logs to see what happens right when the connection drops. These commands may help identify the issue:
journalctl -u NetworkManager --since "10 minutes ago"
or
dmesg | grep -i ethernet
Also, try restarting NetworkManager instead of rebooting the whole system:
sudo systemctl restart NetworkManager
If the problem is driver-related, the logs above should show warnings or disconnect events. Feel free to share any relevant log lines so others can help diagnose it.
Just to let you know 25.10 is not a LTS release.
Are you using a wired connection or wireless?
I am using a wired connection 
oh snap your right, that explains alot thank you
got it thanks, I’ll give it a try
Have you tried a different cable?
got those system logs, here’s what the terminal gave me
apollo@apollo:~$ journalctl -u NetworkManager --since “10 minutes ago”
Dec 11 15:23:40 apollo NetworkManager[186466]: [1765491820.2910] platfo>
Dec 11 15:23:40 apollo NetworkManager[186466]: [1765491820.2911] l3cfg[>
Dec 11 15:23:42 apollo NetworkManager[186466]: [1765491822.2929] ipv6ll>
Dec 11 15:23:52 apollo NetworkManager[186466]: [1765491832.3030] platfo>
Dec 11 15:23:52 apollo NetworkManager[186466]: [1765491832.3030] l3cfg[>
Dec 11 15:23:54 apollo NetworkManager[186466]: [1765491834.3049] ipv6ll>
Dec 11 15:24:04 apollo NetworkManager[186466]: [1765491844.3104] platfo>
Dec 11 15:24:04 apollo NetworkManager[186466]: [1765491844.3105] l3cfg[>
Dec 11 15:24:06 apollo NetworkManager[186466]: [1765491846.3123] ipv6ll>
Dec 11 15:24:16 apollo NetworkManager[186466]: [1765491856.3180] platfo>
Dec 11 15:24:16 apollo NetworkManager[186466]: [1765491856.3181] l3cfg[>
Dec 11 15:24:18 apollo NetworkManager[186466]: [1765491858.3200] ipv6ll>
Dec 11 15:24:28 apollo NetworkManager[186466]: [1765491868.3243] platfo>
Dec 11 15:24:28 apollo NetworkManager[186466]: [1765491868.3243] l3cfg[>
Dec 11 15:24:30 apollo NetworkManager[186466]: [1765491870.3262] ipv6ll>
Dec 11 15:24:40 apollo NetworkManager[186466]: [1765491880.3360] platfo>
Dec 11 15:24:40 apollo NetworkManager[186466]: [1765491880.3360] l3cfg[>
Dec 11 15:24:42 apollo NetworkManager[186466]: [1765491882.3379] ipv6ll>
Dec 11 15:24:52 apollo NetworkManager[186466]: [1765491892.3481] platfo>
Dec 11 15:24:52 apollo NetworkManager[186466]: [1765491892.3481] l3cfg[>
Dec 11 15:24:54 apollo NetworkManager[186466]: [1765491894.3499] ipv6ll>
Dec 11 15:25:04 apollo NetworkManager[186466]: [1765491904.3600] platfo>
Dec 11 15:25:04 apollo NetworkManager[186466]: [1765491904.3601] l3cfg[>
Dec 11 15:25:06 apollo NetworkManager[186466]: [1765491906.3619] ipv6ll>
Dec 11 15:25:16 apollo NetworkManager[186466]: [1765491916.3630] platfo>
Dec 11 15:25:16 apollo NetworkManager[186466]: [1765491916.3630] l3cfg[>
Dec 11 15:25:18 apollo NetworkManager[186466]: [1765491918.3649] ipv6ll>
Dec 11 15:25:28 apollo NetworkManager[186466]: [1765491928.3750] platfo>
Dec 11 15:25:28 apollo NetworkManager[186466]: [1765491928.3750] l3cfg[>
lines 1-29
when I tried ‘dmesg | grep -i ethernet’ I got ‘dmesg: read kernel buffer failed: Operation not permitted’
I have seen this, but usually, it will pop up some unapplied updates shortly after. I think it just maxes out the connection temporarily, and then it opens it up again.
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