Multicluster between AKS and On-Prem

[david-curran-90]

I've got two clusters, one on-prem and one AKS cluster. I've enabled Linkerd multicluster between the two and linked AKS to on-prem. linkerd check --multicluster shows everything as working OK but I'm seeing 502 gateway errors when trying to reach services in AKS

linkerd-multicluster
--------------------
√ Link CRD exists
√ Link resources are valid
        * aks
√ remote cluster access credentials are valid
        * aks
√ clusters share trust anchors
        * aks
√ service mirror controller has required permissions
        * aks
√ service mirror controllers are running
        * aks
√ all gateway mirrors are healthy
        * aks
√ all mirror services have endpoints
√ all mirror services are part of a Link

Status check results are √

/ $ curl podinfo-aks:9898 -v
*   Trying 10.111.83.243:9898...
* Connected to podinfo-aks (10.111.83.243) port 9898 (#0)
> GET / HTTP/1.1
> Host: podinfo-aks:9898
> User-Agent: curl/7.69.1
> Accept: */*
>
* Mark bundle as not supporting multiuse
< HTTP/1.1 502 Bad Gateway
< content-length: 0
< date: Fri, 15 Jan 2021 13:27:26 GMT
<
* Connection #0 to host podinfo-aks left intact

I've followed the guide in the docs but falling down at this point. There is no direct link between AKS and our on-prem network, would this be causing an issue? i.e. does multicluster require network communication both ways?

Thanks