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Forum Discussion
IPv4 and IPv6
I have the AX4200 system with two hardwired satellites running V7.2.7.15_5.1.16. No issues.
UPnP is disabled, IPv4 DHCP is the default with IPv6 disabled. My ISP has assigned IPv6 addresses to the devices on my network (a simple home network) that are IPv6 capable.
Can I leave IPv4 DHCP enabled and enable IPv6 for those devices that are capable to take advantage of IPv6? IOW run both concurrently. And if so, what option for IPv6 should I set?
5 Replies
Been other users with ISP supporting Native IPv6 reporting that IPv6 fails on v.15 FW. If you don't have IPv6 enabled on the RBR, I don't believe any devices would be getting any IPv6 addresses.
Normally if FW is working for IPv6 then both IPv4 and IPv6 could be enabled on the RBR and would work normally.
Depending on the ISP support and what they require, you'll need to ask the ISP what IPv6 mode would be needed to be used on the RBR router unit. DHCP, Auto, Static or 6RD. I believe most ISPs are DHCP or Auto.
That's what I thought about the IPv6 addresses but I have them listed on my iPhone, iPad, and M4 MBP so that's why I asked even tho IPv6 is disabled on the RBR. It's almost as if Comcast pushed them to my devices in case I enabled IPv6 so that's why I asked. Most confusing. So, if Comcast says it's IPv6 DHCP do I still leave IPv4 DHCP enabled for those devices that aren't IPv6 compatible? Or should I just leave well enough alone and not bother with IPv6 until IPv4 is no more.
Most if not all Apple devices have IPv6 enabled by default and seem to have there own protcols on that, even if IPv6 isn't used on the router.
IPv4 needs to be always enabled.
Thank you.
I don't mean to run this question into the ground but I don't seem to be getting anywhere with Xfinity (no surprises there). They keep telling me that I need to configure the modem but they can't help me because it's not their equipment even tho it's approved by Xfinity for use on the system. The modem is IPv4/IPv6 capable according to Motorola but there are no settings in the Admin page to enable/disable or check as far as IPv4/IPv6 goes.
In the AX4200 Advanced Settings I'v enabled IPv6 and selected DHCP. Auto doesn't seem to work. With IPv6DHCP enabled I seem to get IPv6 addresses but when I check to see if IPv6 is working I get and error message from the link I use (test-IPv6.com) that I am not able to reach the public IPv6 network. I am running the current I get the following message:
"If you strongly believe you have IPv6, but we were unable to detect it: it means one of a couple of things. Either your organization is blocking the use of IPv6 to talk to the outside Internet through network policy; or perhaps what you see with IPv6 on your host is not a global address. Any address starting with "::", "fc", "fd", or "fe" are unable to work with the public IPv6 Internet." The addresses I see all start with "fe".
The Orbi choices I have are: Auto Detect, 6 to 4 Tunnel, Pass Through, Fixed, DHCP, PPoE, Auto Config, and 6rd Tunnel. On my MacBook Pro under IPv6 the choices are Automatically, Manually, or Link-Local Only. Currently I have it set to Automatically. What is interesting is that the router (Orbi) has an address that starts with fe80::xxxx: and so forth but the IPv6 address starts with 2601: and so on.
The DNS server has the typical 192... address and an IPv6 address that starts with a different 2601: address.
It's not mission critical that I have to use IPv6 it's more of an academic curiosity at this point in time but now it's become a "need to understand" issue.
