New IP range appearing on LAN

[Supadupastar]

Hey all,

i have my LAN setup with an IP range of 192.168.1.x, now i recently see 10.0.0x IPs appearing and i have no clue where they come from. Sometimes the IP changes back to 192.168.1.x, but some devices dont. Does anyone have any idea or how to fix? 

Thanks in advance!

[manroweb]

You have another device running DHCP and is handing out IP addresses.

Possibly the Synology Rackstation?

[IZT-crobinson]

I don't know what the Modem entry is, but if it is your modem, turn DHCP off.

[Supadupastar]

Right, i forgot about the Modem. It Indeed has an IP range of 10.0.0.x with DHCP enabled. Gonna give the Modem a fixed IP/DHCP off and that should take care of it. But how can it affect the devices that are connected to the USG when DHCP is also enabled there?

[IZT-crobinson]

On your modem, do you have multiple wires connected to other things? I know one should be connected to the USG, any other wires?

[Supadupastar]

Just 2 connections from the Modem. 1 --> USG, 2 --> ipTV box which needs to be connected to the modem in order to work.

[IZT-crobinson]

The ipTV box may be in a bridge mode. Is there any other connections from the ipTV box? Like to your switch, etc?