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From "Aaron Brady (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CLOUDSTACK-9357) DHCP DNS option is incorrect for Redundant Router config
Date Wed, 20 Apr 2016 09:17:25 GMT
Aaron Brady created CLOUDSTACK-9357:
---------------------------------------

             Summary: DHCP DNS option is incorrect for Redundant Router config
                 Key: CLOUDSTACK-9357
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9357
             Project: CloudStack
          Issue Type: Bug
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: SystemVM
    Affects Versions: 4.8.0
            Reporter: Aaron Brady
            Priority: Minor


With two redundant system routers, my guests are given DNS option 6 containing the *system*
IP (not the virtual IP) of whichever router is master as their first DNS server entry.

This means that if one router is down or stopped, DNS requests are slowed until it moves on
to the external secondaries I've supplied.

It looks like the `cloud-early-config` script does the right thing with dnsmasq.conf, but
then the cloud.conf put in /etc/dnsmasq.d/ is incorrect.

I've had a look through the code and that appear to be written by
`systemvm/patches/debian/config/opt/cloud/bin/cs/CsDhcp.py`, but I've been unable to find
where it's being passed the incorrect, non-redundant, IP information.



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