VLAN traffic returning on untagged network

General questions
,
3

Hi @e.khudiyev,

My DHCP config:

 shared-network-name CAMERA {
     authoritative
     subnet 192.168.20.0/24 {
         default-router 192.168.20.1
         dns-server 192.168.20.1
         domain-name camera.home
         ntp-server 192.168.20.1
         range 0 {
             start 192.168.20.50
             stop 192.168.20.250
         }
     }
 }
 shared-network-name GUEST {
     authoritative
     subnet 192.168.40.0/24 {
         default-router 192.168.40.1
         dns-server 192.168.40.1
         domain-name guest.home
         ntp-server 192.168.40.1
         range 0 {
             start 192.168.40.50
             stop 192.168.40.200
         }
     }
 }
 shared-network-name IOT {
     authoritative
     subnet 192.168.30.0/24 {
         default-router 192.168.30.1
         dns-server 192.168.30.1
         domain-name iot.home
         ntp-server 192.168.30.1
         range 0 {
             start 192.168.30.20
             stop 192.168.30.250
         }
     }
 }
 shared-network-name LAN {
     authoritative
     subnet 192.168.10.0/24 {
         default-router 192.168.10.1
         dns-server 192.168.10.1
         domain-name home
         ntp-server 192.168.10.1
         range 0 {
             start 192.168.10.30
             stop 192.168.10.250
         }
     }
 }