Int fix serverless routing (#5361)

* fix(vpc): serverless routing info

* fix(vpc): another precision

* Apply suggestions from code review

Co-authored-by: Thomas TACQUET <[email protected]>

---------

Co-authored-by: Thomas TACQUET <[email protected]>

Author: 2 people

pages/vpc/faq.mdx

@@ -44,7 +44,11 @@ NACLs are currently in Public Beta, and configurable only via the [VPC API](http
 
 ### Why can I not route traffic to my Managed Database on another Private Network?
 
-Only Managed PostgreSQL and MySQL Database Instances created after July 28th 2025 are compatible with [VPC routing](/vpc/concepts/#routing). Maintenance scheduled for later in August 2025 will make all pre-existing Managed PostgreSQL and MySQL Database Instances compatible as well. 
+Only Managed PostgreSQL and MySQL Database Instances created after July 28th 2025 are compatible with [VPC routing](/vpc/concepts/#routing). Maintenance scheduled for later in August 2025 will make all pre-existing Managed PostgreSQL and MySQL Database Instances compatible as well.
+
+### Are Serverless Functions and Containers compatible with VPC routing?
+
+No, Serverless Functions and Containers are not currently compatible with VPC routing. Functions and Containers attached to a Private Network support egress traffic only, towards other resources on the same Private Network.
 
 ### How are NACLs different from security groups?
 

pages/vpc/reference-content/understanding-routing.mdx

@@ -157,4 +157,5 @@ Alternatively, and aligned with best practice, when the default NACL rule **Deni
 ## Limitations
 
 - Only Managed PostgreSQL and MySQL Database Instances created after July 28th 2025 are compatible with VPC routing. Maintenance scheduled for later in August 2025 will make all pre-existing Managed PostgreSQL and MySQL Database Instances compatible as well.
+- Serverless Functions and Containers do not support VPC routing.
 - VPC routing does not currently support virtual IPs.

pages/vpc/troubleshooting/vpc-limitations.mdx

@@ -15,12 +15,13 @@ This page sets out some current limitations of Scaleway's VPC.
   - Instances
   - Elastic Metal servers
   - Apple silicon (Mac mini)
-  - Load Balancers
+  - Load Balancers.
   - Public Gateways
   - Managed Databases for PostgreSQL and MySQL
   - Managed Databases for Redis™ (only during the process of creating the database)
   - Kubernetes Kapsule (only during the process of creating the Kapsule cluster)
-  - Serverless Functions and Containers (egress traffic only, with VPC-supporting namespaces)
+  - Serverless Functions and Containers (egress traffic only, with VPC-supporting namespaces. Not compatible with VPC routing.)
 - Private Networks are not supported on some legacy Instance offers which have reached EOL, e.g. `VC1`, `START1` and `X64-*GB`. Note that all Instance offers in the [current product catalogue](https://www.scaleway.com/en/pricing/?tags=compute) are supported.
 - Only Managed PostgreSQL and MySQL Database Instances created after July 28th 2025 are compatible with [VPC routing](/vpc/concepts/#routing). Maintenance scheduled for later in August 2025 will make all pre-existing Managed PostgreSQL and MySQL Database Instances compatible as well. 
 
+