diff --git a/freeradius_utils/auth.py b/freeradius_utils/auth.py
index d41e9a5a..d1876edd 100644
--- a/freeradius_utils/auth.py
+++ b/freeradius_utils/auth.py
@@ -185,6 +185,11 @@ def post_auth(data):
         instance_stack = nas_machine.switch.stack
         if instance_stack:
             # If it is a stack, we select the correct switch in the stack
+            #
+            # For Juniper, the result looks something like this: NAS-Port-Id = "ge-0/0/6.0""
+            # For other brands (e.g. HP or Mikrotik), the result usually looks like: NAS-Port-Id = "6.0"
+            # This "magic split" handles both cases
+            # Cisco can rot in Hell for all I care, so their format is not supported (it looks like NAS-Port-ID = atm 31/31/7:255.65535 guangzhou001/0/31/63/31/127)
             id_stack_member = port.split("-")[1].split("/")[0]
             nas_machine = (
                 Switch.objects.filter(stack=instance_stack)
@@ -192,8 +197,12 @@ def post_auth(data):
                 .prefetch_related("interface_set__domain__extension")
                 .first()
             )
-        # Find the port number from freeradius, works both with HP, Cisco
-        # and juniper output
+        # Find the port number from freeradius
+        #
+        # For Juniper, the result looks something like this: NAS-Port-Id = "ge-0/0/6.0""
+        # For other brands (e.g. HP or Mikrotik), the result usually looks like: NAS-Port-Id = "6.0"
+        # This "magic split" handles both cases
+        # Cisco can rot in Hell for all I care, so their format is not supported (it looks like NAS-Port-ID = atm 31/31/7:255.65535 guangzhou001/0/31/63/31/127)
         port = port.split(".")[0].split("/")[-1][-2:]
         out = decide_vlan_switch(nas_machine, nas_type, port, mac)
         sw_name, room, reason, vlan_id, decision, attributes = out