olddriver4 opened a new issue, #2207:
URL: https://github.com/apache/apisix-ingress-controller/issues/2207
### Description
```
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: base-grpc
namespace: app
annotations:
kubernetes.io/ingress.class: apisix
k8s.apisix.apache.org/upstream-scheme: grpc
spec:
rules:
- host: "base-grpc.app.ntrnl"
http:
paths:
- path: /*
pathType: Prefix
backend:
service:
name: base
port:
name: grpc
```
<img width="857" alt="image"
src="https://github.com/apache/apisix/assets/28889568/20aa3fc8-fa47-45aa-aa91-f6fdbd05238a";>
`grpcurl -plaintext base-grpc.app.ntrnl:80 list social.base.PortalService`
我确认是生效的，报错如下：
`Failed to list methods for service "social.base.PortalService": rpc error:
code = Unavailable desc = upstream connect error or disconnect/reset before
headers. reset reason: protocol error`
我的域名做了host解析，LB使用的是4层TCP协议，想问问这个问题出在哪里，我找了网上的配置都不能解决！
服务绝对没有问题，因为我使用svc host访问是正确的！
### Environment
- APISIX version (run `apisix version`): 3.7
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