IPV6 address configuration

Discussion in 'Cisco' started by kapownik, Mar 6, 2013.

  1. kapownik

    kapownik Guest

    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 ?
    kapownik, Mar 6, 2013
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  2. 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.
    Lutz Donnerhacke, Mar 8, 2013
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