Cox Cable - IPv6 settings



  • First off thanks to all the other folks answering IPv6 questions here and on the Cox forum on dslreports.com  your posts got me headed in the right direction to get it working here on my Cox Cable account in Phoenix.

    1. Enable IPv6 on the "System: Advanced: Networking" page, this one was causing me most of my grief as I missed it.
    -  Save.

    2. Next set up your WAN interface, "Interfaces: WAN_____" where the ______ is what you called it on your system.
    -  Enable IPv6 and set to DHCP6
    -  In DHCP6 client configuration set it to a /64 and enable the Prefix Hint box.
    -  Save and apply.

    3. Set your LAN(s) "Interfaces: LAN_____" like this:
    -  Set "IPv6 Configuration Type" to "Track Interface."
    -  Set the "Track IPv6 Interface" to your WAN interface.
    -  Save and apply.

    4. Go to "Status: Interfaces" and release and renew your assigned IPs addresses.

    5. Look at your DHCP logs at "Status: System logs: DHCP" to verify that IPv6 is being used.

    Nov 12 14:47:36	dhcpd: Sending Reply to fe80::f2de:f1ff:fe62:9a03 port 546
    Nov 12 14:47:36	dhcpd: Information-request message from fe80::f2de:f1ff:fe62:9a03 port 546, transaction ID 0x33BA3C00
    Nov 12 14:47:36	dhcpd: Sending Reply to fe80::f2de:f1ff:fe62:9a03 port 546
    Nov 12 14:47:36	dhcpd: Information-request message from fe80::f2de:f1ff:fe62:9a03 port 546, transaction ID 0x33BA3C00
    Nov 12 14:47:30	dhcpd: Sending on Socket/11/vr0/2600:8800:2600:63e::/64
    Nov 12 14:47:30	dhcpd: Listening on Socket/11/vr0/2600:8800:2600:63e::/64
    

    6. If all is good your Status: Dashboard - Interfaces widget will now show your IPv6 info and you'll be up and running. (no IPv6 set on my LAN_1 yet)

    WAN_PCIE_L 
    (DHCP)	 up	1000baseT <full-duplex>
    68.0.157.120
    2600:8800:ff06:c00:9d5f:8ec3:b73d:6e95
    
    LAN_1_PCIE_R	 up	1000baseT <full-duplex>
    172.16.0.1
    
    LAN_2_PCI_R	 up	100baseTX <full-duplex>
    172.16.4.1
    2600:8800:2600:63e:219:5bff:fe30:f020</full-duplex></full-duplex></full-duplex>
    

    This topic on DSL Reports has more info on the Cox Cable IPv6 deployment and their service area rollout schedule,

    http://www.dslreports.com/forum/r30294430-AZ-Quarterly-COX-IPv6-Check-Sept-2015


  • LAYER 8 Netgate

    Did you try a /48 prefix hint? /56?

    What prefix did it give to you?



  • You have TWO LAN interfaces by the looks of things, consequently each one will need a /64 prefix, yet you are asking for only ONE /64 prefix.
    The interface LAN_2_PCI_R is infact vr0, so it is getting the first IPv6 address, the second interface is starved.

    If COX supports more than a single /64, you could try setting the WAN interface to request /63 (2x /64), /62 (4x /64), or /60 (16x /64) and so on.
    Each interface you set Track Interface, you need a DIFFERENT IPv6 prefix ID; 0 for the first, 1 for the second and so on.


  • LAYER 8 Netgate

    Request as large a PD as they'll give you. No need to conserve them.



  • I'm not comfortable with IPv6 yet so this was just an attempt to get it up and working on one of the spare Ethernet cards I have stuffed in my pfSense box without breaking anything.

    abwebster, I haven't enabled v6 on my LAN_1 interface yet, I added a note to my crib sheet about the prefix ID numbers for when I do try it. Thanks.

    Derelict, Someone mentioned a /60 or /56 on BBR as workable options, I haven't tried anything but the /64 so far as I just wanted to get it up and working so I could start testing my various systems on a mixed v4 - v6 LAN.

    Lots of different gear to test to see what works and what needs tweaked or replaced and a lot of learning on my part before I'm ready to move critical systems like the wife's laptop or TV over. :-)



  • True, IPv6 can be daunting at first, but the reality is that the most basic networking principles from IPv4 still hold; the Layer 2 part hasn't changed, you can't have the same subnet on two interfaces on the same box (except fe80::/10), you have to have routes to get your traffic from point A to point B.  Oversimplified, but that's the gist of it.

    Here are a couple of IPv6 links to get you started…
    Hurricane Electric Free IPv6 certification - you'll get a free T-Shirt for completing it: https://ipv6.he.net/certification/
    Fred Bovy has a copious amounts of slides, videos, etc http://www.slideshare.net/fredbovy/fred-explains-ipv6


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