Re: ipv6only-flag-02 & Flags Expansion Option

[Alexandre Petrescu <[e-mail]>]

Le 19/09/2018 à 21:34, David Farmer a écrit :
> 
> On Wed, Sep 19, 2018 at 2:02 PM, Ole Troan <[e-mail] 
> <mailto:[e-mail]>> wrote:
> 
>     David,
> 
>      > This is not harmless. It costs us a bit from a limited pool,
> 
>     We have RFC5175 so this is hardly a scarce resource.
> 
> 
> Do most IPv6 stacks actually implement the Flags Expansion Option in 
> section 4 of RFC5175?

Linux kernel and radvd do not implement RFC5175 'Flags Expansion option'.

I wonder whether odhcp of openwrt implements RFC5175.

For information, attached to this email is a patch we wrote to the linux 
kernel 5 years ago to make rfc5175 to it.

> Without the knowledge that most IPv6 stacks actually implement the Flags 
> Expansion Optio, I'd still characterize it as a limited resource.
> 
> Maybe we should use flag bit 9 for this purpose if we move it forward.
> 

I dont know, it is good to think about it.

Alex

> Thanks.
> 
> 
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