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AWS elasticloadbalancing documentation change

Service: elasticloadbalancing · 2025-10-13 · Documentation low

File: elasticloadbalancing/latest/application/application-load-balancers.md

Summary

Clarified IPv4 requirements for ALB authentication and updated IPAM pool support restrictions.

Security assessment

Changes address configuration requirements and documentation accuracy. The HTTP 500 error scenario describes a reliability impact rather than a security vulnerability. IPAM pool restrictions are operational clarifications.

Diff

diff --git a/elasticloadbalancing/latest/application/application-load-balancers.md b/elasticloadbalancing/latest/application/application-load-balancers.md
index c76565dd9..24391ab08 100644
--- a//elasticloadbalancing/latest/application/application-load-balancers.md
+++ b//elasticloadbalancing/latest/application/application-load-balancers.md
@@ -318 +318 @@ Clients must connect to the load balancer using IPv6 addresses (for example, 200
-  * Application Load Balancer authentication only supports IPv4 when connecting to an Identity Provider (IdP) or Amazon Cognito endpoint. Without a public IPv4 address the load balancer cannot complete the authentication process, resulting in HTTP 500 errors.
+  * Application Load Balancer authentication only supports IPv4 when connecting to an Identity Provider (IdP) or Amazon Cognito endpoint. Without a public IPv4 address, the load balancer can't complete the authentication process, resulting in HTTP 500 errors.
@@ -333 +333 @@ To get started, create an IPAM IP address pool. For more information, see [Bring
-  * IPAM IP address pools are not supported with internal load balancers or the `dualstack-without-public-ipv4` IP address type.
+  * IPAM IPv6 address pools are not supported.
@@ -335 +335 @@ To get started, create an IPAM IP address pool. For more information, see [Bring
-  * IPAM IP address pools are supported only for IPv4 addresses. With a `dualstack` load balancer, IPv6 addresses are assigned from the subnets where the load balancer is enabled.
+  * IPAM IPv4 address pools are not supported with internal load balancers or the `dualstack-without-public-ipv4` IP address type.