Unable to start Azure Data Factory SSIS Integration Runtime for my Managed Instance

EJR 1 Reputation point
2020-08-31T11:05:08.297+00:00

I'm trying to deploy an Azure Data Factory SSIS Integration runtime for use with my SQL Managed Instance (on the private interface). I keep running into the same issue with this error:

Failed to start the integration runtime: SSISintegrationRuntime. Error: Error code: InvalidVnetConfiguration. Error message: VNet configuration is invalid. Code : MisconfiguredDnsServerOrNsgSettings, Message: Failed to provision Integration Runtime in Vnet. If you have configured the DNS server or NSG settings, please make sure the DNS server is accessible and NSG is configured properly. Please see https://learn.microsoft.com/azure/data-factory/join-azure-ssis-integration-runtime-virtual-network to configure your VNet

I've followed the instructions here: https://learn.microsoft.com/en-us/azure/data-factory/join-azure-ssis-integration-runtime-virtual-network#subnet carefully, at least I thought I had, but still no go. Here's a screenshot of my NSG inbound and outbound for the VNet (the subnet the managed instance is on 10.0.0.0/24 and the subnet for the SSIS IR is 10.0.2.0/24):

Inbound:
W4f3N.png

Outbound:
MHKLw.png

Here are my subnets with the SSIS subnet highlighted:
YHEnh.png

We don't have any special DNS setup.
If I deploy to the public interface, it seems to work OK.
Any suggestions are very welcome!

Azure Data Factory
Azure Data Factory
An Azure service for ingesting, preparing, and transforming data at scale.
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SQL Server Integration Services
SQL Server Integration Services
A Microsoft platform for building enterprise-level data integration and data transformations solutions.
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  1. Monalv-MSFT 5,896 Reputation points
    2020-09-01T09:24:27.833+00:00