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Re: IPv6 SLAAC-Adresse herunterpriorisieren?

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Hello,

Marc Haber a écrit :
(automatic translation from german as I do not speak the language)
>
> I've got a host that is connected with IPv6. a static
> IP address is configured locally, in addition the device gets a
> Prefix and its default gateway via SLAAC:
> 
> | 2: eth0: mtu 1500 qdisc <BROADCAST,MULTICAST,UP,LOWER_UP> pfifo_fast state UP qlen 1000
> | Link / ether 52:54:00: fa: de: 7d brd ff: ff: ff: ff: ff: ff
> | Inet 192.168.146.11/24 scope global eth0
> | Inet6 2001: db8: 40b7: 9102 :: 200:100 / 64 scope global
> | Valid_lft preferred_lft forever forever
> | Inet6 2001: db8: 40b7: 9102:5054: ff: fefa: de7d/64 scope global dynamic
> | Valid_lft 86338sec preferred_lft 14338sec
> | Inet6 fe80 :: 5054: ff: fefa: de7d/64 scope link
> | Valid_lft preferred_lft forever forever
> 
> Can I somehow through local configuration or configuration
> ensure the radvd on the router that the same address SLAAC
> is taught as "deprecated", making it suitable for outgoing connections
> the statically configured address does? Unfortunately, can nagios'
> check_ssh plugin not set the source address.

IME, IPv6 static addresses are preferred over autoconfigured addresses.

On the local host, you can disable autoconfiguration on the interface
(sysctl net.ipv6.conf.eth0.autoconf=0). The host will still learn the
prefix and default router information from RA, but not create an
autoconfigured address.

In radvd configuration, you can try to disable the "Autonomous" flag
(AdvAutonomous off) for the prefix, or set AdvPreferredLifetime to 0 but
this will affect all hosts which use the RA's. I haven't tested either
of these.

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Thread

IPv6 SLAAC-Adresse herunterpriorisieren? Marc Haber <mh+usenetspam1118@zugschl.us> - 2012-03-23 10:53 +0100
  Re: IPv6 SLAAC-Adresse herunterpriorisieren? Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2012-03-24 11:25 +0100
    Re: IPv6 SLAAC-Adresse herunterpriorisieren? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-03-24 13:43 +0000
      Re: IPv6 SLAAC-Adresse herunterpriorisieren? Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2012-03-24 20:41 +0100
        Re: IPv6 SLAAC-Adresse herunterpriorisieren? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-03-24 21:49 +0000
          Re: IPv6 SLAAC-Adresse herunterpriorisieren? Marc Haber <mh+usenetspam1118@zugschl.us> - 2012-04-02 22:10 +0200
      Re: IPv6 SLAAC-Adresse herunterpriorisieren? Marc Haber <mh+usenetspam1118@zugschl.us> - 2012-04-02 22:08 +0200
    Re: IPv6 SLAAC-Adresse herunterpriorisieren? Marc Haber <mh+usenetspam1118@zugschl.us> - 2012-04-02 22:07 +0200
  Re: IPv6 SLAAC-Adresse herunterpriorisieren? Marc Haber <mh+usenetspam1118@zugschl.us> - 2012-03-26 06:50 +0200
  Reduce priority of an IPv6 SLAAC adderss (was: IPv6 SLAAC-Adresse herunterpriorisieren?) Marc Haber <mh+usenetspam1118@zugschl.us> - 2012-03-26 06:55 +0200

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