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NetDog
Premium,VIP
join:2002-03-04
Parker, CO
kudos:77
Reviews:
·Comcast
reply to amwdrizz

Re: [IPv6] Comcast IPv6 Address Assignment/Delegation

I would like to give everyone a heads up, we are changing the allowed shortest prefix from /60 to a /64. There is an issue found on a version of CMTS code that creates an issue for the CMTS. Once all the CMTS's get upgraded to the latest code we will change the shortest prefix back to a /60.

So if you have a IA_PD request as a /60 the DHCP server will respond with a /64. So leave your IA_PD request as a /60 once we get the code in the field and change the DHCP back your request will be honored.

If you have any questions please feel free to PM me if you want. I will answer what I can; as you all are aware.

Sample from a Cisco router:

HomeRT01#show ipv6 dhcp interface
GigabitEthernet0/1.201 is in server mode
Using pool: phones
Preference value: 0
Vlan101 is in client mode
Prefix State is OPEN
Renew will be sent in 1d03h
Address State is OPEN
Renew for address will be sent in 1d03h
List of known servers:
Reachable via address: FE80::
DUID:
Preference: 255
Configuration parameters:
IA PD: IA ID 0x00120001, T1 172683, T2 276293
Prefix: 2601:1:Something::/64
preferred lifetime 345367, valid lifetime 345367
expires at Feb 08 2013 02:22 PM (270975 seconds)
IA NA: IA ID 0x00120001, T1 172800, T2 276480
Address: 2001:558:6040:5:Something/128
preferred lifetime 345600, valid lifetime 345600
expires at Feb 08 2013 02:22 PM (270973 seconds)
DNS server: 2001:558:FEED::2
DNS server: 2001:558:FEED::1
Information refresh time: 0
Prefix name: prefix-from-Comcast
Prefixes sent as hint:
::/60



NetFixer
Snarl For The Camera Please
Premium
join:2004-06-24
The Boro
Reviews:
·Cingular Wireless
·Comcast Business..
·Vonage

said by NetDog:

I would like to give everyone a heads up, we are changing the allowed shortest prefix from /60 to a /64. There is an issue found on a version of CMTS code that creates an issue for the CMTS. Once all the CMTS's get upgraded to the latest code we will change the shortest prefix back to a /60.

So if you have a IA_PD request as a /60 the DHCP server will respond with a /64. So leave your IA_PD request as a /60 once we get the code in the field and change the DHCP back your request will be honored.

If you have any questions please feel free to PM me if you want. I will answer what I can; as you all are aware.

Thanks for the heads up. I suspect that I must have gotten caught up in the middle of the config changes yesterday: »[IPv6] IPv6 problems with router's factory MAC address

After reading your post, I tried the DIR655's original WAN MAC address again, and now it works again (with a "/64" allocation).
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