Simple IPv6 question [Was: Re: IPv6 site local EUI-64 adresses and jails]

2005-08-15 Thread Emanuel Strobl 
Am Freitag, 12. August 2005 21:24 CEST schrieb Emanuel Strobl:
 Am Freitag, 12. August 2005 20:53 CEST schrieb Emanuel Strobl:
  Hi all,
 
  I'm quiet new to IPv6 so I'd like to ask some questions:

 Here are two more:

 How do I use the eui64 option of ifconfig? 'ifconfig fxp0 inet6
 fe80:0:0:0:eui64 ' doesn't work!

 What's the meaning of the %fxp0 tail of the ifconfig output for the
 inet6 address?

Dear inet6 guys,

I don't know the kind of addresses FreeBSD uses for autoconfigured 
link-local addresses.
For example: fe80::20e:cff:fe34:2bf8%em0

What the hack is %em0 ??? Interestingly I can use this address, but ping6 
fe80::20e:cff:fe34:2bf8 doesn't work
The Handbook doesn't clarify this mysterious address. Is it FreeBSD 
specific?

Thanks in andvance, I posted this also to current@ since I got no answer 
from questions@

-Harry



 Thanks,

 -Harry

  So far I know how to generate s site-local address on basis of the MAC
  address of the interface. That's what FreeBSD does itself for INET6
  enabled kernels.
  Now in the 24-16-24 scheme of th interface id part of the IPv6
  address, the 16 bits were inserted with the value FFFE. And bit 57 was
  changed to one! Why What if it is alread one? Or isn't tehre any
  vendor who can have bit 41 of his MAC 1?
  Now I want to use a dedicated interface, which is in a different
  subnet, for 5 jails. How do I do that if I want to keep the MAC
  relation and if I'm not allewd to change the FFFE insert? It isn't
  possible then, is it? What should I do instead? Invent my own 64-bit
  scheme?
 
  I hope you understand my questions, thanks a lot in advance,
 
  -Harr


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Re: Simple IPv6 question [Was: Re: IPv6 site local EUI-64 adresses and jails]

2005-08-15 Thread Michael W. Oliver 
On 2005-08-15T20:51:05+0200, Emanuel Strobl wrote:
 Dear inet6 guys,
 
 I don't know the kind of addresses FreeBSD uses for autoconfigured 
 link-local addresses.
 For example: fe80::20e:cff:fe34:2bf8%em0
 
 What the hack is %em0 ??? Interestingly I can use this address, but ping6 
 fe80::20e:cff:fe34:2bf8 doesn't work
 The Handbook doesn't clarify this mysterious address. Is it FreeBSD 
 specific?

Check out

http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/ipv6.html

``Some of the userland tools support extended numeric IPv6 syntax, as
documented in draft-ietf-ipngwg-scopedaddr-format-00.txt. You can
specify outgoing link, by using name of the outgoing interface like
fe80::1%ne0. This way you will be able to specify link-local scoped
address without much trouble.''

-- 
Mike Oliver
[see complete headers for contact information]


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