Merge pull request #170991 from mialdrid/patch-108

Update enrollment guidance

Author: PRMerger7

articles/expressroute/expressroute-howto-linkvnet-portal-resource-manager.md

@@ -181,6 +181,7 @@ When adding a new connection for your ExpressRoute gateway, select the checkbox
 FastPath support for virtual network peering is now in Public preview. Enrollment is only available through Azure PowerShell. See [FastPath preview features](expressroute-howto-linkvnet-arm.md#enroll-in-expressroute-fastpath-features-preview), for instructions on how to enroll.
 
 > [!NOTE] 
+> Any connections configured for FastPath in the target subscription will be enrolled in this preview. We do not advise enabling this preview in production subscriptions.
 > If you already have FastPath configured and want to enroll in the preview feature, you need to do the following:
 > 1. Enroll in the FastPath preview feature with the Azure PowerShell command above.
 > 1. Disable and then re-enable FastPath on the target connection.