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IPV6 address configuration

 
 
kapownik
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      03-06-2013

With a command...

R1(config-if)#ipv6 address 2001:5c0:1400:a::331/64 eui-64

....one can configure an address for an interface with EUI-64 part
generated from actual MAC address on this interface.

How to make router to generate EUI-64 with random numbers, without
revealing actual MAC address and if possible last 64 bits of
IPv6-address are randomly changed from time to time ?

--
Regards
Bart

 
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Lutz Donnerhacke
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      03-08-2013
* kapownik wrote:
> How to make router to generate EUI-64 with random numbers, without
> revealing actual MAC address and if possible last 64 bits of
> IPv6-address are randomly changed from time to time ?


Run a script periodically which does:
(conf-if)# ipv6 address fe80::ran:dom:hex:tets link-local

And you are fine.

Please keep in mind, that this will change the SLAAC adresses while keep the
reachablilty of the old ones fow a while.

Don't forget to update your DNS, your firewalls, and all your systems
manually configured to use the router IP.
 
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