fix(vpc): fix faq

Author: RoRoJ

faq/vpc.mdx

@@ -119,4 +119,6 @@ Nonetheless, you can also reserve specific IPs from a Private Network's CIDR blo
 
 ### How can I attach my VMs on a Proxmox cluster on Elastic Metal to a Private Network?
 
-We recommend that you use our IPAM product for this purpose. See [how to reserve a private IP address with an attached MAC address](/ipam/how-to/reserve-ip/#how-to-reserve-a-private-ip-address-with-an-attached-mac-address).
+For this purpose use the option of attaching a **custom resource** to a Private Network, specifying its MAC address. Full instructions for attaching custom resources are in the [Private Networks documentation](/vpc/how-to/attach-resources-to-pn#how-can-i-manage-ip-addresses-for-my-proxmox-virtual-machines-vms-on-elastic-metal-servers).
+
+You can also [reserve a private IP address](/ipam/how-to/reserve-ip/) with IPAM, and use this reserved address to attach a custom resource.