diff --git a/python/nav/web/info/room/views.py b/python/nav/web/info/room/views.py
index 4a1b7934a7..e2f61e864c 100644
--- a/python/nav/web/info/room/views.py
+++ b/python/nav/web/info/room/views.py
@@ -51,6 +51,13 @@
     RACK_CENTER: 'center',
     RACK_RIGHT: 'right',
 }
+# See section 3.2.4 of RFC 3635:
+ETHERNET_INTERFACE_TYPES = (
+    6,  # ethernetCsmacd
+    62,  # fastEther
+    69,  # fastEtherFX
+    117,  # gigabitEthernet
+)
 
 _logger = logging.getLogger('nav.web.info.room')
 
@@ -217,7 +224,7 @@ def render_netboxes(request, roomid):
     # Filter interfaces on iftype and add fast last_cam lookup
     for netbox in netboxes:
         netbox.interfaces = (
-            netbox.interface_set.filter(iftype=6)
+            netbox.interface_set.filter(iftype__in=ETHERNET_INTERFACE_TYPES)
             .order_by("ifindex")
             .extra(select=cam_query)
         )