[Florian-Wittl]

Add new IPv4 NAT egress and LB ingress IP prefixes for Azure regions

This PR updates both the NAT egress IPs and load balancer ingress IPs for all Azure-based Cloud Foundry regions.

As part of upgrading to the latest generation of Azure NAT Gateways and Load Balancers, which require a new IP SKU (the billing and feature tier of an Azure resource), we are introducing new egress and ingress IP prefixes. Instead of adding individual IP addresses, we have chosen to use CIDR prefixes (/26 for egress, /30 for ingress), which offer more flexibility and consistency for network configuration.

The following regions are affected: AP20, AP21, BR20, CA20, CH20, EU20, EU22, JP20, UK20, US20, US21.

Action required: If you maintain firewall allowlists for outbound or inbound traffic to/from SAP BTP Cloud Foundry applications, please add the new IP prefixes listed for your region to your firewall rules.

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[PlamiIG]

Thank you for your feedback! We will look into it and come back to you if we have any questions.

[nikolasimeonov77]

Hi @Florian-Wittl ,
What takt will these IP prefixes be available? There is no release date mentioned in this pull request. I've just checked the IP ranges for cf-eu20 at https://ops2go.internal.cfapps.eu12.hana.ondemand.com/detailed/centrallandscapes?default+cf-eu20 and your porposals are not there. Maybe, you made a mistake and these prefixes are for the ABAP regions at https://help.sap.com/docs/btp/sap-business-technology-platform/regions-and-api-endpoints-for-abap-environment?version=Cloud&ai=true or for the Connectivity service at https://help.sap.com/docs/connectivity/sap-btp-connectivity-cf/destination-service-nat-ips?version=Cloud&ai=true?
Jens Sondersorge also confirmed that he's not aware of such changes.
Thanks!

Sincerely,
Nikola

[nikolasimeonov77]

Please make sure your changes are available in the Ops2go table at https://ops2go.internal.cfapps.eu12.hana.ondemand.com/detailed/centrallandscapes before you request them for the Cloud Foundry environment.