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12 Messages
New Router, New IPv6 Range, No IPv6 service
Comcast delivered a new Cisco DPC3941B today. It worked OK for IPv4. I had to poke the interface and reboot it a few times in order to get IPv6 addresses to assign to the LAN. There was something screwed up with the IPv6 DNS information to start with. Then I disabled DHCPv6 because autoconfiguration has always worked well for me. So now I have addresses but they do not work. IPv6 packets appear to vanish into thin air after the router. The router's diagnostics show it can ping IPv6 addresses. But for some reason it isn't routing them. I saw a similar message here on the forum but his problem had been solved by a full router reset? I don't see how that would help me, as this router is brand new out of the box and has been reset with fresh configuration loaded just this morning. Help and advice please! Thanks.
Accepted Solution
demky
New problem solver
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6 Messages
8 years ago
I was told by support that you need to have dhcpv6 enabled on the modem and have at least one device directly connected to the modem make a dhcp request for an ipv6 address to get the ipv6 routing to work. As for the built in diagnostics, my experience has been it uses the WAN ipv6 address, so it doesn't help any in troubleshooting problems with the LAN addresses on the modem.
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Jonathan_Briggs
New Contributor
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12 Messages
8 years ago
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Jonathan_Briggs
New Contributor
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12 Messages
8 years ago
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