Merge branch 'main' into patch-18

Author: chrisda

defender-office-365/tenant-allow-block-list-ip-addresses-configure.md

@@ -15,7 +15,7 @@ ms.collection:
   - tier1
 description: Admins can learn how to allow or block IPv6 addresses in the Tenant Allow/Block List.
 ms.service: defender-office-365
-ms.date: 09/20/2024
+ms.date: 02/26/2025
 appliesto:
   - ✅ <a href="https://learn.microsoft.com/defender-office-365/eop-about" target="_blank">Exchange Online Protection</a>
   - ✅ <a href="https://learn.microsoft.com/defender-office-365/mdo-about#defender-for-office-365-plan-1-vs-plan-2-cheat-sheet" target="_blank">Microsoft Defender for Office 365 Plan 1 and Plan 2</a>
@@ -30,6 +30,9 @@ In Microsoft 365 organizations with mailboxes in Exchange Online or standalone E
 
 This article describes how admins can manage entries for IPv6 addresses in the Microsoft Defender portal and in Exchange Online PowerShell.
 
+> [!NOTE]
+> IPv4 ranges aren't supported yet. Admins can create and manage entries for IPv4 addresses in the [Connection filter policy](connection-filter-policies-configure.md).
+
 ## What do you need to know before you begin?
 
 - You open the Microsoft Defender portal at <https://security.microsoft.com>. To go directly to the **Tenant Allow/Block Lists** page, use <https://security.microsoft.com/tenantAllowBlockList>. To go directly to the **Submissions** page, use <https://security.microsoft.com/reportsubmission>.