subnet prefix length > 64 breaks IPv6?

Glen Kent glen.kent at
Sat Dec 24 10:07:02 UTC 2011

Ok. So does SLAAC break with masks > 64?


On Sat, Dec 24, 2011 at 12:38 PM,  <sthaug at> wrote:
>> I am not sure if this is the reason as this only applies to the link
>> local IP address. One could still assign a global IPv6 address. So,
>> why does basic IPv6 (ND process, etc) break if i use a netmask of say
>> /120?
> As long as you assign addresses statically, IPv6 works just fine with a
> netmask > 64. We've been using this for several years now. No problem.
> Steinar Haug, Nethelp consulting, sthaug at

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