[pve-devel] [PATCH] add routed network mode

[Alexandre DERUMIER]

about openvz, for routed configuration with veth (not venet),

https://openvz.org/Virtual_Ethernet_device

gateway of guest is also proxmox host ip



"Using a directly routed IPv4 with virtual Ethernet device"

Situation
Hardware Node (HN/CT0) has 192.168.0.1/24 with router 192.168.0.254.
We also know that IPv4 10.0.0.1/32 is directly routed to 192.168.0.1 (this is called a fail-over IP).
We want to give this directly routed IPv4 address to a container (CT).

host
----
auto eth0
iface eth0 inet static
        address 192.168.0.1
        netmask 255.255.255.0
        gateway 192.168.0.254


#ip route add 10.0.0.1 dev veth101.0
#echo 1 > /proc/sys/net/ipv4/ip_forward
#echo 1 > /proc/sys/net/ipv4/conf/eth0/forwarding
#echo 1 > /proc/sys/net/ipv4/conf/veth101.0/forwarding

guest
-----
auto eth0
iface eth0 inet static
        address 10.0.0.1
        netmask 255.255.255.255
        up /sbin/ip route add 192.168.0.1 dev eth0
        up /sbin/ip route add default via 192.168.0.1

----- Mail original ----- 

De: "Alexandre DERUMIER" <aderumier at odiso.com> 
À: "Dietmar Maurer" <dietmar at proxmox.com> 
Cc: pve-devel at pve.proxmox.com 
Envoyé: Mardi 27 Août 2013 12:16:45 
Objet: Re: [pve-devel] [PATCH] add routed network mode 

>>At least there docu states that it works without any problem: 
>> 
>>http://wiki.hetzner.de/index.php/Proxmox_VE#Netzwerkkonfiguration_OpenVZ_.28venet.29 
I'm not expert with openvz (is venet an tap interface ?) 


What I don't understand in your setup, is that proxmox host and guest, use the same external default gateway. 

How to you do if guest ip is in different network/range than host ip ??? 



----- Mail original ----- 

De: "Dietmar Maurer" <dietmar at proxmox.com> 
À: "Dietmar Maurer" <dietmar at proxmox.com>, "Alexandre DERUMIER" <aderumier at odiso.com> 
Cc: pve-devel at pve.proxmox.com 
Envoyé: Mardi 27 Août 2013 12:00:47 
Objet: RE: [PATCH] add routed network mode 

> > Both have 2 kinds of config, they can route single ip address (/32), 
> > or block ip range. 
> > This ips are routed from hardware router to proxmox host main ip, and 
> > guests use host ips as gateway. 
> > I don't see how to manage that with your proxy-arp setup ? 
> 
> If that setup work with openvz (I assume that works already), It will also work 
> with my patches. 


At least there docu states that it works without any problem: 

http://wiki.hetzner.de/index.php/Proxmox_VE#Netzwerkkonfiguration_OpenVZ_.28venet.29 
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