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Motorola MB8611 and new Synology router.
I was told by Synology tech support I need an IPV6 address from my ISP. Xfinity tells me I need to speak with Motorola. Anyone else experienced connection issues with new equipment like this? I have a basic level of tech understanding. I can follow direction but unable to resolve this myself. Getting the run around. Help appreciated.
Jlavaseur
Problem Solver
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948 Messages
2 years ago
i am not familiar with that particular router, i do use the mb8611 modem, i have a asus router, i was able to turn ivp6 on within the settings on my router, but it was interesting, it gave 6 or so configurations of ivp6, i tried them all, half of them cut my download speed by roughly 50%, the other ones didnt...
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flatlander3
Problem Solver
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1.5K Messages
2 years ago
Xfinity DHCPv6. Yeah.
You'd have to check the manual for Specific Model number/firmware release nodes if you can find it. It's a bit different on everything and I haven't used synology. Xfinity DHCPv6 is a bit goofy, but running debug mode to see the response on my stuff, it really comes down to these three types of configurations on most things. The setting you are looking for might be in you WAN internet connection settings > local > IPV6 (set to auto or dhcpv6 if it's an option).
In general:
Managed: The firewall will send out RA packets and addresses will only be assigned to clients using DHCPv6.
Assisted: The firewall will send out RA packets and addresses can be assigned to clients by DHCPv6 or SLAAC.
Stateless DHCP: The firewall will send out RA packets and addresses can be assigned to clients by SLAAC while providing additional information such as DNS and NTP from DHCPv6.
Look for a setting for the DHCPv6 server, or DHCP server/RA. Might be called stateful, stateless, stateless dhcpv6.
Managed --> Doesn't work at all with my stuff so it's doing something other than pure DHCPv6, neither does Stateless so I don't think it's entirely SLAAC. For some reason, Assisted (you might have stateless dhcpv6) seems to. Xfinity won't provide any technical information here or a white paper on their implementation from what I've seen, so "guessing the config in your market", seems to be the only way to figure it out.
The prefix delegation size you can "hint for". Depending on your market, that's going to be /64 (single subnet) or /60. Likely /64 now in most. There may possibly be an option for "track interface" in your LAN settings, or if you don't see one, it's probably doing it automatically.
The trouble I ran into? Works great. Sometimes for a couple of weeks. On the DHCPv6 renew, sometimes the servers aren't there. Sometimes, for a quite a while. I don't know if they're just getting flooded, or just don't work well. Not releasing the lease before the renew seems to help (it checks it in half the renew time) if you have that option, until you get to the point where the server still doesn't respond After the lease is expired, then it murders routing on your local clients.
In any case, grab the manual and check out the IPV6 section. Maybe IPV6 works better at your location than it does at mine.
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