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Forum Discussion

Stealth16's avatar
Stealth16
Follower
Jan 21, 2017

Cable Modem CM600 stuck in IPv6 mode - how do I get it reset?

I have had TWC internet as my ISP for several years and have been using my own Cable Modem, CM600 with no issues.   I recently switched to WOW internet as my ISP.  The installer came and upon attem...
Troubleshooting
djc6's avatar
djc6
Luminary
Jan 29, 2017

Sounds like a firmware bug.    Here is a post from a WoW employee further describing details of your issue - looks like its by design that this setting can't be reset:

 

https://www.dslreports.com/forum/r30887250-

 

 

I recall reading about a similar bug on Arris SB6121:

 

https://www.dslreports.com/forum/r30992222-Internet-SB6121-stuck-on-ipv6-only-can-t-default-back-to-ipv4

 

Have any Comcast friends who will let you activate this modem on their account?  It would then get a firmware upgrade since Comcast uses v6 provisioning.  Its possible this is fixed in a later firmware and you could then use it on WoW.  This table indicates Comcast uses a later firmware:

 

http://kb.netgear.com/000036375/What-s-the-latest-firmware-version-of-my-NETGEAR-cable-modem-or-modem-router?cid=wmt_netgear_organic

 

What did Netgear support say?