Re: Problem with missing routes due to recent DHCP -> static change


Dmitriy Kalinin
 

Would you be ok with specifying this additional options in the deployment
manifest per subnet?

On Mon, Jun 1, 2015 at 11:06 AM, aaron_huber <aaron.m.huber(a)intel.com>
wrote:

Yes, once the /etc/network/interfaces file is converted to "static" and it
does an ifdown/ifup then the route disappears because it is no longer being
added by the DHCP client. Technically I think the best solution would be
to
just add any routes that were configured in DHCP to the interfaces file (at
least on Ubuntu, see
http://askubuntu.com/questions/548940/add-static-route-in-ubuntu-14-04).

I was just poking around on the best place to find the info. The
/var/lib/dhcp/dhclient.eth0.leases file will contain an entry like the
following that specifies the route information retrieved from DHCP:

option rfc3442-classless-static-routes 32,169,254,169,254,10,65,25,10;

That would be equivalent to:

post-up route add 169.254.169.254/32 gw 10.65.25.10

Aaron



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