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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 als...
Hello, Thank you for the reply.
1. Spectrum looks to only provision devices using IPv4 addresses.
2. My router has only IPv6 on the internal and lo interfaces. All RFC1918. This is the issue seen by everyone.
3.
| Time | Priority | Description |
| Fri Feb 17 07:03:13 2023 | (Warning (5)) | DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=38:94:ed:09:ed:88;CMTS-MAC=00:af:1f:1e:07:21;CM-QOS=1.1;CM-VER=3.1; |
| Fri Feb 17 07:03:12 2023 | (Critical (3)) | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=38:94:ed:09:ed:88;CMTS-MAC=00:af:1f:1e:07:21;CM-QOS=1.1;CM-VER=3.1; |
| Fri Feb 17 06:51:14 2023 | (Error (4)) | SW upgrade Failed before download - File not Present |
| Fri Feb 17 06:51:14 2023 | (Notice (6)) | SW Download INIT - Via NMS |
| Fri Feb 17 06:51:04 2023 | (Warning (5)) | Dynamic Range Window violation |
| Fri Feb 17 06:51:04 2023 | (Warning (5)) | RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=38:94:ed:09:ed:88;CMTS-MAC=00:af:1f:1e:07:21;CM-QOS=1.1;CM-VER=3.1; |
| Fri Feb 17 06:51:04 2023 | (Warning (5)) | Dynamic Range Window violation |
| Fri Feb 17 06:51:04 2023 | (Warning (5)) | RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=38:94:ed:09:ed:88;CMTS-MAC=00:af:1f:1e:07:21;CM-QOS=1.1;CM-VER=3.1; |
| Fri Feb 17 06:51:03 2023 | (Warning (5)) | REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=38:94:ed:09:ed:88;CMTS-MAC=00:af:1f:1e:07:21;CM-QOS=1.1;CM-VER=3.1; |
| Fri Feb 17 06:50:58 2023 | (Notice (6)) | DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2.;CM-MAC=38:94:ed:09:ed:88;CMTS-MAC=00:af:1f:1e:07:21;CM-QOS=1.1;CM-VER=3.1; |
| Fri Feb 17 06:50:53 2023 | (Notice (6)) | TLV-11 - unrecognized OID;CM-MAC=38:94:ed:09:ed:88;CMTS-MAC=00:af:1f:1e:07:21;CM-QOS=1.1;CM-VER=3.1; |
| Fri Feb 17 06:50:53 2023 | (Error (4)) | Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=38:94:ed:09:ed:88;CMTS-MAC=00:af:1f:1e:07:21;CM-QOS=1.1;CM-VER=3.1; |
| Fri Feb 17 06:50:53 2023 | (Error (4)) | Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=38:94:ed:09:ed:88;CMTS-MAC=00:af:1f:1e:07:21;CM-QOS=1.1;CM-VER=3.1; |
| Fri Feb 17 06:50:53 2023 | (Warning (5)) | DHCP WARNING - Non-critical field invalid in response ;CM-MAC=38:94:ed:09:ed:88;CMTS-MAC=00:af:1f:1e:07:21;CM-QOS=1.1;CM-VER=3.1; |
| Time Not Established | (Notice (6)) | Honoring MDD; IP provisioning mode = IPv4 |
| Time Not Established | (Critical (3)) | SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=38:94:ed:09:ed:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1; |
4. Regardless of prefix request size Spectrum doesn't assign IPv6 prefixes to NG modems.
5. https://www.dslreports.com/forum/r33423803-HSI-CFL-IPV6-Issue
https://www.reddit.com/r/Spectrum/comments/uzb2up/native_ipv6_no_longer_enabled_on_spectrum_network/
https://www.reddit.com/r/Spectrum/comments/vspgc7/trouble_with_ipv6_connection/
The decision from Spectrum looks to impact TP-Link, Arris, Netgear, and others. It appears their process has been accepted by Motorola and obviously their own internal issued modems. I have no doubt this is simply a policy issue on Spectrum's part but I wanted to make some effort to secure my investment in the NG gear before giving up.