Hi Reinier, This sounds a lot like bug 2141531. And also bug 2141584.
Each of those bugs found that 6.8.0-103-generic in -proposed fixes the issue. Do you think you could try also? Instructions to Install (On a noble system): 1) cat << EOF | sudo tee /etc/apt/sources.list.d/ubuntu-$(lsb_release -cs)-proposed.list # Enable Ubuntu proposed archive deb http://archive.ubuntu.com/ubuntu/ $(lsb_release -cs)-proposed main universe EOF 2) sudo apt update 3) sudo apt install linux-{image,modules,modules-extra,headers}-6.8.0-103-generic 4) sudo reboot 5) uname -rv 6.8.0-103-generic #103-Ubuntu SMP PREEMPT_DYNAMIC Tue Feb 10 13:34:59 UTC 2026 6) sudo rm /etc/apt/sources.list.d/ubuntu-$(lsb_release -cs)-proposed.list 7) sudo apt update Thanks, Matthew ** Also affects: linux (Ubuntu Noble) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2142118 Title: Kernel 6.8.0-100: route cache corrupts external IPs as broadcast on systems with VLAN interfaces To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2142118/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
