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CM2000, 1000, etc firmware update needed for Spectrum IPv6
Hello,
For many months all user-owned CM series Netgear cable modems are unable to retrieve IPv6 leases. They previously worked without issue. There are numerous mentions on DSL Reports and also Reddit about the issue. Spectrum cites an issue with most recent firmware validation and suggests that Netgear needs to make some action to get new firmware certified in order to get it deployed to customer-owned devices. I'm asking that others reach out from the community to ask that these steps be taken and/or contact with Spectrum be made. While IPv6 is not critical, it is available on the network and our decision to use a Netgear product is what is being cited as the reason for its unavailability. These devices are not yet EOL and should be supported for full interoperability on the advertised networks.
Any attention from Netgear would be appreciated.
DOCSIS 3.1 Cable Modem (CM2050V)
DOCSIS 3.1 Cable Modem (CM2000)
18 Replies
Netgear sends spectrum updates but spectrum doesn't necessarily deploy them.
You can compare your version to what version spectrum has approved and other ISP's have.
But one thing I've noticed is that it tends to be the router with IPv6 issues versus the modem.
sounds like Spectrum just trying to pass the buck.
Thank you for the reply.
As I mentioned, multiple people on the Spectrum network report the issue specific to Netgear modems. In my case my router and infrastructure are all Ubiquiti - UniFi and have full IPv6 working via various tunnel brokers and locally on my LAN. Also of note is the listed firmware at the link you provided is not, in fact, the latest deployed to Spectrum devices. The latest on my device is V1.01.08. Suggesting that table is not maintained. My contacts at Spectrum have cited the need for a certification process to be engaged in by Netgear. This isn't a tech support request but a vendor issue between the ISP and vendor we've chosen for our device. Customers are switching to Motorola and Hiltron to remediate the issue. I wanted to try and get a response from Netgear before I do the same. Again, appreciate the offer of help, but this isn't a router issue. It's a network policy issue with Spectrum and they cite firmware as the reason. I'm unaware of any CVE or other issue that would require them to adopt such a policy, but it's what my contacts there have explained. I've looked on NANOG for a Netgear contact but sadly this forum appears to be the best communication channel and it appears to be managed mostly by non-Netgear staff like yourself. While helpful, it's not what's needed here.
Spectrum can always contact netgear if they're saying its a netgear issue.
Again, netgear sends the files but spectrum actually has to certify it.
You can potentially try this form as well.
