WAN problem - FritzBox Bridge Mode - DHCP lease timed out

[Chris87777]

Hi,

I have a Fritzbox 6600 cable with vodafone business in germany and static IPv4 and want to use my opnsense firewall.

I can set the opnsense as exposed host in the fritzbox settings and it'll work, everything works.

But if i set the fritzbox to bridge mode (lan 2) i loose connection after 1-2h and i have to reset the connection to make it work.

fritzbox says "Fehlergrund: 1 (DHCPv4 lease timed out))"

Any tips? Maybe WAN DHCP lease timeout on the opnsense?

Reagrds,
Chris