@Clive_A So I found the issue: If I change the Gateway IP (it's now 192.168.0.1 instead of 192.168.0.254), things are working fine and I can again modify settings (enabling IGMP Snooping, ...). I do...

@Clive_A : What I want is mentioned in my initial message: "On my ER707-M2 I can no longer modify any settings of the Wired Networks / LAN interfaces. I get this message if I try: "The IP address of...

Hello @Clive_A , Thank you for your fast response. I confirm that 192.168.0.254 is not taken by any other device other than the router. See below the list of clients filtered by IP@ and the list of...

Hi, On my ER707-M2 I can no longer modify any settings of the Wired Networks / LAN interfaces. I get this message if I try: "The IP address of Gateway is used in DHCP Reservation." Yet after...