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From "dsclose (JIRA)" <>
Subject [jira] [Closed] (CLOUDSTACK-9400) RvR should present virtual IP for name resolution
Date Wed, 01 Jun 2016 16:01:59 GMT


dsclose closed CLOUDSTACK-9400.
    Resolution: Not A Problem

> RvR should present virtual IP for name resolution
> -------------------------------------------------
>                 Key: CLOUDSTACK-9400
>                 URL:
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>    Affects Versions: 4.8.0
>            Reporter: dsclose
>            Priority: Minor
>              Labels: easyfix
> Virtual routers are assigned name servers via the kernel arguments. These name servers
are also presented via DHCP to guest VMs - but the virtual router prepends these name servers
with it's own guest IP. This allows the virtual router to act as a name resolver for guest
> With redundant virtual routers, the router's guest IP is not the same as the virtual
gateway IP. This means that after a failover or a network restart, guest VMs will not be able
to find the name server assigned via DHCP and this causes delays whenever name resolution
is needed.
> Redundant virtual routers should provide the guest gateway IP to guest VMs instead of
their own guest IP. This will allow name resolver functionality to continue after failover
or network restart events.

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