Clarification: On 02/26/2013 01:51 PM, Nils Toedtmann wrote:
Hello
i have several libvirt hosts (CentOS6, kvm), each with an internal libvirt "default" network with "forward mode='route'". I have two questions concerning static routes.
To give some context: On each of my libvirt hosts there is a VM acting as a OpenVPN-gateway to the other libvirt hosts.
[A] How can i add a persistant static route on the libvirt host to one of its guests?
Read: How can i add a persistant static route TO the libvirt host (the static route going via one of its guests)
Someone had already asked this on this list in 2011 but apperently did not receive an answer [1]. Likewise, i found that a /etc/sysconfig/network-scripts/route-virbr0 does not get applied when libvirt starts its default network.
[B] How can i make libvirt's dnsmasq push static routes into the guests?
Apperently dnsmasq supports pushing of static routes using DHCP options 33 or 121 [2], e.g. "--dhcp-option=121,x.x.x.x/yy,z.z.z.z". But i did not find how to add that to a libvirt network declaration.
I know that if i had [A] working, the host could redirect the IP traffic on behalf of the guests, but i'd like to avoid the resulting extra hop and the flood of ICMP redirects.
Please advise. Cheers /nils.
[1] https://www.redhat.com/archives/libvirt-users/2011-December/msg00061.html [2] http://tools.ietf.org/html/rfc3442
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