diff --git a/doc/how-to/initialize.md b/doc/how-to/initialize.md
index 408a86870..27de77107 100644
--- a/doc/how-to/initialize.md
+++ b/doc/how-to/initialize.md
@@ -51,6 +51,7 @@ Complete the following steps to initialize MicroCloud:
    MicroCloud automatically detects the available addresses (IPv4 and IPv6) on the existing network interfaces and displays them in a table.
 
    You must select exactly one address.
+   Each LXD cluster member also serves the LXD REST API on this address, so choose one that LXD users can reach.
 1. On all the other machines, enter the following command and repeat the address selection:
 
        sudo microcloud join
diff --git a/doc/reference/requirements.md b/doc/reference/requirements.md
index b429bd97c..d95f2a7f9 100644
--- a/doc/reference/requirements.md
+++ b/doc/reference/requirements.md
@@ -87,6 +87,7 @@ Network interface for intra-cluster traffic
 
    This network interface can be, for example, a dedicated physical network interface, a VLAN, or a virtual function on an {abbr}`SR-IOV (Single root I/O virtualization)`-capable network interface.
    It serves as the dedicated network interface for MicroCloud and is used for multicast discovery (during setup) and all internal traffic between the MicroCloud, OVN, and Ceph members.
+   The address selected for internal traffic is also used by each LXD cluster member to serve the LXD REST API, so it should be reachable by users accessing LXD.
 
 (reference-requirements-network-interfaces-uplink)=
 Network interface to connect to the uplink network