How my setting looks like in the picture

I use the gateway as the encapsulation for the router.

But everytime i try to add "Developer vlan" (Which in Norwegian is Utvikler) Then i just get a overlapping error. What am i doing wrong?

How my setting looks like in the picture

I use the gateway as the encapsulation for the router.

But everytime i try to add "Developer vlan" (Which in Norwegian is Utvikler) Then i just get a overlapping error. What am i doing wrong?

edit: I figured out the issue. All i did was make the IP unique enough. And yes the broadcast was wrong for sure.

But i had on IT Drift Vlan 10 changed to IP: 172.16.10.11 Subnett: 255.255.255.0 Gateway: 172.16.10.1

and Utviklere Vlan 20 changed to IP: 172.16.0.21 Subnett: 255.255.254.0 Gateway: 172.16.0.2

That did the trick more or less!

Appreciate the help either way!