– This is deployed in Rancher.
The ingress is done using istio. Yesterday Istio was updated to latest version, 1.4.4.
Istio ingress is installed as NodePort (31380 port for http); at this moment all requests to the ingress are returning connection refused.
We have noticed that there is no listener on IPV4 only on IPV6 for port 31380; this is why all requests are returning connection refused.
Since the only relevant change was the update from 1.4.3 to 1.4.4, we suspect that this is the cause.