I’ve been having this issue very sporadically (sometimes a couple times a week, sometimes once a month). I’m curious as to how the more veteran folk here would try and narrow down the cause of this issue.
I can provide more info if needed!
Edit: More Info:
- Using a static IP (no DHCP) through Netplan.
Are you able to access the server’s Linux shell via KVM or out-of-band management during the Internet outage? If so, I would first check the kernel log for any errors. I’d then follow up with a PING to the local gateway within the same IP subnet to validate Ethernet connectivity. After that I’d start performing PINGs and traceroutes to subnets beyond the local gateway to see what’s going on with tcpdump capturing all interface traffic in the background.
I am able to access the Linux shell locally or on the local area network. From within I can ping the gateway, but nothing beyond that.
Is there a tracert equivalent for Ubuntu?
I will say I get this error when trying to ping www.google.com:
ping: unknown host