Thank you for submitting the feedback item! Can you please provide us some clarification on the scenario? There should be no disruption within Azure when adding additional prefixes to an address space of the VNet.
An error occurred while saving the commentSreenivasan commented
I would like to share scenario, Presently HUB Vnet address space is 10.111.0.0/17 which advertised over express route gateway no peering to all spokes. While planning to resize HUB vent address space to make use Peering getting overlapping error, how can we achieve without interrupting on-premises to spokes vnet communication, any other way to advertise instead from address space of vnet to ER. Pls advice.
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