I can assist you in setting up your router and connecting it to your ISP. Let's get started!
I can assist you in setting up your router and connecting it to your ISP. Let's get started!
Hey! I see you're just starting out with networking and have a few questions. You got a new ISP in Austria offering 300Mbit/s via cable, which is great. However, your modem/router combo isn't working well, and the Wi-Fi signal is weak. You want to use your own Netgear R6800 router instead. You discovered you need to switch to IPv6 mode to work around the ISP's bridge mode limitations. Your ISP suggested changing to IPv4, but you're wondering why that would be necessary. After some research, they confirmed it’s possible if your router supports IPv6. They also mentioned that using bridge mode might cause double NAT issues. You’re thinking about connecting your router in IPv6 mode or asking the ISP to switch you to IPv4 for bridge mode—what do you think? Just connect your device in IPv6 and let me know how it goes! Hope this helps!
Well, you could simply install it right away. The problem arises because the ISP modem treats all traffic as coming from your router's IP address. NAT handles this situation. This becomes problematic if you need to set up port forwarding or QoS settings. Bridged mode supports both IPv4 and IPv6. It ensures all commands are routed through your router, allowing you to adjust settings without modifying the modem itself. You might need to assign static IPs to the router's WAN port, as routing and DHCP won't work on the ISP device.
Note: The author considers removing the ISP router entirely since it often incurs monthly charges even though you don’t own it, especially in the US. They also mention compatibility requirements for the cable interface and speed support (likely DOCSIS).
The ISP modem comes free with the 40€/month plan, which means no problem. I’ve already purchased a router, so I’m planning to stick with that. (Docsis modems tend to be costly and my provider will replace the current one every three years with an upgraded model, so I prefer keeping things as they are.) I know bridge mode only supports IPv4 on this specific modem (as noted in the manual and also hidden in the web interface), so it can’t work with IPv6. There’s also no option to turn off NAT on my ISP modem or router. Therefore, I’ll likely need to switch back to IPv4. Can I possibly set a static IP address for the WAN and disable DHCP instead of using bridge mode? Appreciate your help!
I didn't hear your response, so I wasn't alerted that you replied. We'll skip DOCSIS. I’m not sure what it refers to just because people often mention the newest version (around 3.0). There are three common setups: using NAT, no NAT, and a bridge. By default, bridged mode turns off NAT, so there’s no direct way to disable it. Bridged mode should work with both IPv4 and IPv6. Just enable bridged mode in your modem, then set the router interfaces for IPv4 and IPv6. If you need more control, you can assign static IPs on the router’s WAN port and turn off DHCP on the modem. I wouldn’t choose that path, but if you prefer, you could limit your LAN to two hosts—like 192.168.0.0/30 or 10.0.0.0/30—and pick a subnet size that fits your needs. If you stick with 192.168.0.0, you can use 192.168.1.0/24 or 192.168.0.0/24 depending on your LAN design. Either way, you’ll likely face challenges with ports, QoS, or firewall rules. You should be able to switch to bridged mode and assign static IPs on the router’s WAN. The public IP (IPv4 or IPv6) will be what your modem receives. Once that’s set, you can fine-tune your internal network addresses without touching the hardware. If bridged mode prevents you from getting an IPv6 address, just stick with IPv4—your ISP shouldn’t need to update their records.