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AWS outposts medium security documentation change

Service: outposts · 2026-02-22 · Security-related medium

File: outposts/latest/network-userguide/outposts-local-gateways.md

Summary

Added IP address planning warning to avoid BGP routing conflicts

Security assessment

Added explicit warning about IP range conflicts causing BGP routing issues. This addresses misconfiguration risks that could compromise network security and service availability.

Diff

diff --git a/outposts/latest/network-userguide/outposts-local-gateways.md b/outposts/latest/network-userguide/outposts-local-gateways.md
index ea39f49cb..9184e3fcd 100644
--- a//outposts/latest/network-userguide/outposts-local-gateways.md
+++ b//outposts/latest/network-userguide/outposts-local-gateways.md
@@ -39,0 +40,4 @@ To understand instance bandwidth limitations for traffic going through a local g
+###### IP Address Planning for Local Gateway
+
+For Outposts using private connectivity, do not create CoIP pools or DVR subnet ranges that overlap with existing Service Link VIF address ranges or VPC CIDR ranges used for the dedicated private connectivity VPC, as they will cause BGP routing conflicts and affect Service Link functionality.
+