I have also disabled Additional DNSMASQ and enabled RADVD without any custom script.
Nothing has worked. I can't get an IPV6 WAN address from my service.
However, when I select "Native IPV6 from ISP" I do get a WAN IPV6 address, but my connected devices themselves don't get any IPV6 access after I enter relevant values for "Assigned / Routed Prefix" and "Router IPv6 Address".
Here's the very limited general support on IPV6 from my ISP:
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What is my IPv6 address?
To quickly find your IP address, you can do a Google search for my IP address.
Each customer is assigned a public /56 subnet.
Your gateway address will be ::1 of your subnet. For example, if your assigned range is 2604:b2c0:299:9900::/56, then your gateway’s address will be 2604:b2c0:299:9900::1. This is also the address of the local DNS server. Addresses ::0 through ::7 are reserved.
Our DHCPv6 server will assign addresses in your range between ::101 and ::7ff. As an example, you might receive an address of 2604:b2c0:299:9900::2a6 on your device
I’m using my own router. How do I use IPv6 on my router?
If you’re using your own router, you can still use your IPv4 addressing. However you can also use IPv6 addressing. Just double-check that your router and devices support IPv6 (most routers do). You may need to check your documentation for the exact steps to enable IPv6 as it will depend on your particular router model.
In general, however, you can follow these steps:
Assign your router’s WAN address by setting it to SLAAC or DHCPv6.
Set the LAN IPv6 range for the router to use for its client devices. An example configuration (using the same example address as above) is to assign 2604:b2c0:299:9901::/64 as the LAN range and then to select either of the SLAAC or DHCPv6 Server options on your router.
Is this a public IP address?
Yes, all your IPv6 capable devices will receive a unique public IP address.
Is this a static IP address?
Although your IP address should not change often, it is possible that it can from time to time.
When I change the prefix to 56 should I be using DHCPv6 W PD or Native IPV6 from ISP?
I don't have all those interfaces. I just quickly cut and pasted something you shared in another post. I'll delete the relevant lines. My bridging table only consists of br0 and the interfaces are eth1 eth2 and vlan1 (STP no). All of my devices connect to the br0 interface. My line from my ISP's modem connects to the WAN port as the vlan2 interface. I've attached my setup - very basic.
So should it look like this:
- DHCPv6 W PD
- prefix 56
- Cloudflare DNS servers (and left this blank as well just to try)
- Default MTU 1452
With a reboot of both the router and the modem, I haven't been able to get an IPV6 address with these settings.
However, when I choose Native IPV6 from ISP and apply, the IPV6 address DOES automatically populate at the top op the DD WRT web interface next to the WAN IPV4. Using the example given by my ISP, I entered "2604:b2c0:xxx:xxxx::" as the Assigned / Routed Prefix for the particular block they've assigned me (I'm only using Xs here for obvious reasons, not in the actual settings). I have left the "Router IPV6 Address" blank. I haven't been able to get IPV6 working in this state either playing around with the various settings.
I don't have all those interfaces. I just quickly cut and pasted something you shared in another post. I'll delete the relevant lines. My bridging table only consists of br0 and the interfaces are eth1 eth2 and vlan1 (STP no). All of my devices connect to the br0 interface. My line from my ISP's modem connects to the WAN port as the vlan2 interface. I've attached my setup - very basic.
Question: Is your ISP's modem in bridge mode? Judging by the IP address on your vlan2 connection (192.168.140.1), it's still in a non-public IP block which leads me to believe that your network is a double-NAT setup.
Thanks for the reply. Yes, the WAN IP I pull from my modem isn't a public IP. So I suppose it might be in bridge mode. I haven't had to use PPPOE to authenticate credentials. For IPV4 DHCP is working fine. A customer support agent responded "our service does have a strict NAT type" to answer why I might not be getting IPV6 service, even though the company itself promises IPV6. Frankly, I didn't understand the relevance of what the CSR shared, both because I'm no expert and because I couldn't find any connection searching around this forum
Any help is deeply appreciated. Thank you.
siege wrote:
jurkingo wrote:
I don't have all those interfaces. I just quickly cut and pasted something you shared in another post. I'll delete the relevant lines. My bridging table only consists of br0 and the interfaces are eth1 eth2 and vlan1 (STP no). All of my devices connect to the br0 interface. My line from my ISP's modem connects to the WAN port as the vlan2 interface. I've attached my setup - very basic.
Question: Is your ISP's modem in bridge mode? Judging by the IP address on your vlan2 connection (192.168.140.1), it's still in a non-public IP block which leads me to believe that your network is a double-NAT setup.
Thanks for the reply. Yes, the WAN IP I pull from my modem isn't a public IP. So I suppose it might be in bridge mode.
Your modem is not in bridge mode; it needs to be. Bridge mode disables all routing functions in the modem and makes it a "dumb bridge" between your network and the public Internet. When it's in bridge mode, you should have a public IP address on your WAN port.
I forget: is this a cable modem or a DSL modem? You mentioned PPPoE (which is typically used with DSL), so I thought I'd ask. Either way, you should still have the ability to get the modem to bridge.
Thanks for your help. I reverted my R6400 to stock firmware and then updated to the latest netgear firmware for this model. The auto-config feature in the IPV6 section of the netgear firmware places this router in "passthrough" mode. This has proven to be key and my network is IPV6 capable again.
So my problem in that regard is solved. But stock firmware presents its own problems, like lack of selecting certain wifi channels and diminished overall speed. If anyone can suggest dd wrt setting that can emulate "passthrough" mode for IPV6, I'm willing to give it a shot.
When you say LAN-LAN, do you mean that I should connect the outgoing cable from my ISP'S modem to one of my router's LAN ports rather than the WAN port? How would I proceed after that?
To clarify, the modem I was given by my ISP is a MOCA device which connects to my buildings coax wiring. That wiring then connects to my ISP's service at the main coax terminal in my building. I have no way of getting admin privileges over the MOCA device in my possession to change any features. I'm not sure my ISP is willing to help in that sense and troubleshooting with people who know 1/4 of what I know would make me want to shoot myself (so I deeply appreciate you experts giving me a hand here).
While I understand how this seems like a double-NAT, in that the MOCA modem is itself acting like a router and providing my own router with a local IPV4 address rather than a global address, I can only control my own router, the R6400. I should also clarify that while my IPV4 on the R6400 appears as a local address, the IPV6 service in "Passthrough" mode populates the address as the global IPV6 address and not the link local fe80 IPV6 address.
Don't mean to hijack the thread but to give my experience with ISP's Coax Modem/Router combo and getting a Public Address to eliminate Double-NAT to personal wireless router connected to it.
Remote site #1 is with an ISP on Coax/Moca with an Arris Modem/Router. I recall changing the Gateway Mode "Bridged" (under menu Basic -> Setup) would cause the Arris to reboot back to Routed. In my case to get Public Address IP from the Arris's LAN Ports, I had to leave the Gateway Mode as "Routed" but change Primary Network Only Mode to "Bridged".
To disable Arris Wireless, in my case leave Wireless Radio Enable as "Enabled", disable would change it back to enable. Under menu Wireless -> Primary Network Settings, Disable Wireless Network. _________________ Home Network on Telus 1Gb PureFibre - 10GbE Copper Backbone
2x R7800 - Gateway & WiFi & 3xWireGuard - DDWRT r53562 Std k4.9
Off Site 1
R7000 - Gateway & WiFi & WireGuard - DDWRT r54517 Std
E3000 - Station Bridge - DDWRT r49626 Mega K4.4
Off Site 2
R7000 - Gateway & WiFi - DDWRT r54517 Std
E2000 - Wired ISP IPTV PVR Blocker - DDWRT r35531
Thank you, mac913. However, I don't have access to my ISP's modem/router. I can't reconfigure their end of the routing to Bridged as that is not how their services are set up.
Setting up my router w DD-WRT as an access point enables all functionality in terms of my client devices - IPV4 and IPV6 work just fine. However, I lose all functionality of my router in terms of firewalls and preferred DNS servers and local static leases. I also can't log into my own router once the DHCP server is turned off as the addresses I have chosen for my router in settings in the same subnet as my ISP's router are unreachable. Also, all of my client devices are visible upstream on my ISP's router, are they not?
What can I do in this particular case? The private address of my ISP's router is 192.168.140.1 . I have tried a local address for my router of 192.168.140.2 and various other addresses in the same subnet as the ISP router but outside the DHCP range. Each time, I lost the ability to log into my router's interface. How can I still create a private LAN for my devices in this case if I accept that my router will have to be in AP mode?