Istio Ingress Gateway issue

Networking
1

– 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.

2

There is never a listener for port 31380, if your configs work well there is a listener for the port defined in the gateway server