[CLOUDSTACK-9357] DHCP DNS option is incorrect for Redundant Router config

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 4.8.0
• Component/s: SystemVM
• Security Level: Public (Anyone can view this level - this is the default.)
• Assignee: Unassigned
• Reporter: Aaron Brady
• Created: 20/Apr/16 09:17
• Updated: 18/Oct/16 09:49

Description

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.