diff --git a/web/support/kb/maas/modify_networking_deployed_node.rst b/web/support/kb/maas/modify_networking_deployed_node.rst
index a5e48f79d4dd26a36062325a21244006d41516a3..4e92cd546a2a222647eba9ed542e2f73dab7c240 100644
--- a/web/support/kb/maas/modify_networking_deployed_node.rst
+++ b/web/support/kb/maas/modify_networking_deployed_node.rst
@@ -1,7 +1,8 @@
-How to modify the networking setup of a deployed node in MASS
+How to modify the networking setup of a deployed node in MAAS
 =============================================================
 
-Case: you need to add a subnet/space in a deployed node in MAAS, and make Juju aware of it in order to deploy services on LXD containers (which require spaces).
+Case1: you need to add a subnet/space in a deployed node in MAAS, and make Juju aware of it in order to deploy services on LXD containers (which require spaces).
+CASE2: you need to modify the MAC addresses of the network interfaces of a deployed node following a replacement of the network board 
 
 Instructions
 ------------
@@ -9,22 +10,44 @@ Instructions
 1. Log in to the MAAS node
 2. Log in to the database (in our case MAAS is in HA managed by Stolon)::
 
-   # psql -U stolonuser -h localhost -p 25432 -d maasdb
+   # psql -U maas -h localhost -p 25432 -d maasdb
 
 N.B::
 
+   maas user password is written in /etc/maas/regiond.conf
+
+Some useful commands::
+
    -  \l: show databases; 
    - \dt: show tables; 
    - \d: describe table
-   - select example: select hostname, status from maasserver_node where status=...;
+   - select example: select hostname, status from maasserver_node where hostname='ct1-r4-gpu01';
 
 The nodes are recorded in the table **maasserver_node**.
 
-3. Update node, set status=4 (**ready**)
+3. Update node, set status=4 (**ready**)::
+
+    update maasserver_node set status=4 where hostname='node_name';
 
 The node becomes ready and we can modify its configuration from the GUI!
 
-4. Update node, set status=6 (**deployed**)
+4. Update node, set status=6 (**deployed**)::
+
+    update maasserver_node set status=6 where hostname='node_name';
 
 N.B. The administrator need to apply the actual configuration of the node: netplan configuration, netplan apply, possibly reboot of the existing LXD containers to make them aware of the changes...
 
+N.B for case 2:
+
+If the node NICs are configured in Bond it is possible to change the MAC address of the Bond interface from the GUI, selecting Bond -> Edit bond, select "Manual MAC address". However, it is not possible to modify the MAC address of the physical interfaces. Use the MAAS CLI to modify them::
+ 
+     # get MACHINE_ID from GUI, use it to get the machine's data
+     maas maas interfaces read $MACHINE_ID > /tmp/interfaces_$MACHINE_ID.json
+     
+     # Read IDs of the two 25Gb NICs
+     read NIC1 NIC2 <<< $( cat /tmp/interfaces_$MACHINE_ID.json  | jq '.[] | select(.link_speed==25000)  .id' | xargs echo )
+     
+     # Update MAC Address of the two NICs
+     maas maas interface update $MACHINE_ID $NIC1 mac_address="xx:xx:xx:xx:xx"
+
+