US Cable Support > Comcast HSI > [IPv6] OpenWRT and Comcast IPv6

reply to whfsdude

Re: [IPv6] OpenWRT and Comcast IPv6

If you're absolutely sure they have proper IPv6 instead of 6to4 tunneling in your area... here's my working dhcp6c.conf

root@WZR-HP-AG300H:~# cat /var/etc/dhcp6c.conf
interface eth1 {
        send ia-pd 0;
        send ia-na 0;
        script "/usr/bin/dhcp6c-state";
        request domain-name-servers;
};
 
id-assoc pd 0 {
        prefix-interface br-lan {
                sla-id 1;
                sla-len 0;
        };
};
 
id-assoc na 0 {
};
 

br-lan    Link encap:Ethernet  HWaddr 10:6F:3F:XX:XX:XX
          inet addr:172.16.1.1  Bcast:172.16.1.255  Mask:255.255.255.0
          inet6 addr: 2601:4:3500:35:126f:3fff:fe28:xxxx/64 Scope:Global
          inet6 addr: fe80::126f:3fff:fe28:xxxx/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:11410697 errors:0 dropped:0 overruns:0 frame:0
          TX packets:21575426 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:874781380 (834.2 MiB)  TX bytes:30647430101 (28.5 GiB)
 
eth0      Link encap:Ethernet  HWaddr 10:6F:XX:XX:XX:XX
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5679448 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12544092 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:379629909 (362.0 MiB)  TX bytes:1452172592 (1.3 GiB)
          Interrupt:4
 
eth1      Link encap:Ethernet  HWaddr 10:6F:XX:XX:XX:XX
          inet addr:68.41.11.10  Bcast:68.41.11.255  Mask:255.255.252.0
          inet6 addr: 2001:558:6007:6a:20c9:35a5:xxxx:xxxx/128 Scope:Global
          inet6 addr: fe80::126f:3fff:xxxx:xxxx/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:32058132 errors:0 dropped:0 overruns:0 frame:0
          TX packets:11283941 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1261719809 (1.1 GiB)  TX bytes:1023844820 (976.4 MiB)
          Interrupt:5
 
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:799 errors:0 dropped:0 overruns:0 frame:0
          TX packets:799 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:135540 (132.3 KiB)  TX bytes:135540 (132.3 KiB)
 
wlan0     Link encap:Ethernet  HWaddr 10:6F:XX:XX:XX:XX
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2329399 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3816588 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:32
          RX bytes:289777427 (276.3 MiB)  TX bytes:363251825 (346.4 MiB)
 
wlan1     Link encap:Ethernet  HWaddr 10:6F:3F:XX:XX:XX
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3435344 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5848396 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:32
          RX bytes:374814256 (357.4 MiB)  TX bytes:3313698523 (3.0 GiB)
 

root@WZR-HP-AG300H:~# cat /var/etc/radvd.conf
interface br-lan
{
        AdvSendAdvert on;
        AdvManagedFlag off;
        AdvOtherConfigFlag off;
 
        prefix 2601:4:3500:35:126f:3fff:xxxx:xxxx/64
        {
                AdvOnLink on;
                AdvAutonomous on;
                AdvRouterAddr off;
        };
};
 

config interface 'loopback'
        option ifname 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'
 
config interface 'lan'
        option ifname 'eth0'
        option type 'bridge'
        option proto 'static'
        option netmask '255.255.255.0'
        option ipaddr '172.16.1.1'
#       option broadcast '1'
#       option accept_ra '0'
#       option send_rs '1'
 
config interface 'wan'
        option ifname 'eth1'
        option proto 'dhcp'
        option hostname 'WZR-HP-AG300H'
        option broadcast '1'
        option accept_ra '1'
        option send_rs '0'
        option ipv6 '1'
 
config switch
        option name 'eth0'
        option reset '1'
        option enable_vlan '1'
 
config switch_vlan
        option device 'eth0'
        option vlan '1'
        option ports '0 1 2 3 4'
 

Thanks for posting your configuration. I only have subtle differences in configuration - /var/etc/radvd.conf does not have the prefix section and /var/etc/dhcp6c.conf has an additional section within id-assoc pd 0.

id-assoc pd 0 {
        prefix-interface lo {
                sla-id 0;
                sla-len 0;
        };
        prefix-interface br-lan {
                sla-id 1;
                sla-len 0;
        };
};
 

It appears my area is not native IPv6 (or at least not anymore).

When I first hooked up Comcast about 4 months ago, I remember scoring a 10/10 on test-ipv6 and verifying I had native IPv6. I've switched modems since then, but that is all that has changed. Thanks everyone for your help, at least I know I'm ready when native IPv6 arrives.

Zoom 5341J. My modem died about 30 days after installation. Zoom sent me a replacement. So I swapped for the same model & brand, just a different physical modem.

PM sent. I'll let you know what he finds.