I have a second static IP for a google cloud instance. Everything was fine for a number of months.
The instance will no longer receive traffic externally. I can reach the IP from the server - but nothing is available from outside.
I've double-checked and the static IP is still setup with a forwarding rule.
I've double-checked the google firewall and there's no rules specific to any IP.
I've tried creating a forwarding rule through the advanced load-balancing page (I don't think I should have to, but I tried as quick fix), but it never creates anything (goes back to the list with nothing added).
Is there anything else to check? A way to verify the forwarding rule is working?