Defining name on host network

setup:
docker swarm 3 raspberry pi 3b+, hypriot
docker version 18.09.0, build 4d60db4
host network : 192.168.3.0/24

creating networks:

docker network create  --config-only --subnet="192.168.3.0/24" --ip-range="192.168.3.2/24" -o parent=eth0 conf_net
docker network create -d macvlan --scope swarm --config-from conf_net oh_vlan

test_net1.yml

version: '3'
services:
  test1:
    image: nginx:stable-alpine
    networks:
      - oh_vlan
   
  test2:
    image: nginx:stable-alpine
    networks:
      - oh_vlan
   
networks:
 oh_vlan:
   external:
     name: oh_vlan

deploying the services

$ docker stack deploy -c test_net1.yml net_test1
Creating service net_test1_test1
Creating service net_test1_test2

when I look at my router/dns/dhcp server (Fritzbox) I see following entries:

Is there any way to control names which are entered there, as these are the names for accessing the service from the host network.

Had such entry too: