Corrected button icon

netbox/templates/dcim/inc/device_table.html

@@ -7,7 +7,7 @@
         {% render_table table table_template|default:'table.html' %}
         {% if perms.dcim.add_interface %}
             <button type="submit" name="_edit" formaction="{% url 'dcim:interface_bulk_add' %}" class="btn btn-primary btn-sm">
-                <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span>
+                <span class="glyphicon glyphicon-plus" aria-hidden="true"></span>
                 Add Interfaces
             </button>
         {% endif %}