docs: Clarify metallb peer address comment
It was not clear before the gateway of which interface should be used.
This patch clarifies that is the gateway address for the private IPv4.
@@ -65,8 +65,9 @@ data:
# K8s node name of the worker.
kubernetes.io/hostname: worker-0
# Address of the *external* BGP router with which the worker node should form a BGP session.
- # On Packet this address can be found under the "GATEWAY" field on the "Overview" section in
- # https://app.packet.net/devices/<device_id>.
+ # On Packet this is the gateway address for the private IPv4 network.
+ # This can be found under the "GATEWAY" field for the IPv4 private IP on the
+ # "Overview" section in: https://app.packet.net/devices/<device_id>.
peer-address: 10.64.43.10
# The BGP autonomous system number on the external BGP router.
peer-asn: 65530
