vmbr0 has no internet access

[bobalo]

Hello!
I'm new to proxmox , and I find it great.
However when creating a KVM node (win2008r2) the node has no internet access. Switching to NAT network mode works but that's not what I want.
I have multiple IP's and I want each IP dedicated to each node.
My /etc/network/interfaces is as follows (I created vmbr1 trying to add a second IP , but it's no good)

# network interface settings
auto lo
iface lo inet loopback
#
auto vmbr0
iface vmbr0 inet static
        address  xxx.xxx.211.178
        netmask  255.255.255.240
        pointpoint xxx.xxx.211.177
        gateway  xxx.xxx.211.177
        bridge_ports eth0
        bridge_stp off
        bridge_fd 1

#next
auto vmbr1
iface vmbr1 inet static
        address xxx.xxx.211.179
        netmask 255.255.255.240

I understand the vmbr1 might be misconfigured but vmbr0 was given by the provider and should work , right?

 

[m.ardito]

your file is missing eth0 line (shoud be there, but unconfigured, since is a bridge slave)

see the default configuration here http://pve.proxmox.com/wiki/Network_Model

Marco

 

[dietmar]

I understand the vmbr1 might be misconfigured but vmbr0 was given by the provider and should work , right?

Maybe the provider block traffic from other MAC than eth0 (traffic from VM)?

 

[bobalo]

your file is missing eth0 line (shoud be there, but unconfigured, since is a bridge slave)

see the default configuration here http://pve.proxmox.com/wiki/Network_Model

Marco

I've added it , but no effect.
@djetmar Could be , i'll ask them about it.

 

[bobalo]

Maybe the provider block traffic from other MAC than eth0 (traffic from VM)?

They answered ; No, we do not have MAC address restrictions.
It's gotta be something i'm doing wrong... I swear I spent 3 hours googling around for solution to my problem but nothing came up yet.

 

[dietmar]

Please try to use tcpdump to see what happens to your traffic:

# tcpdump -n -l -i vmbr0

 

[dietmar]

Also, vmbr1 seem to have the same network, so that can result in routing problems.
Please remove vmbr1 for testing.

 

[bobalo]

Please try to use tcpdump to see what happens to your traffic:

# tcpdump -n -l -i vmbr0

09:23:28.799553 IP xxx.xxx.211.178.22 > 94.253.159.85.52085: Flags [P.], seq 8036032:8036448, ack 15905, win 146, length 416
^C
48253 packets captured
48253 packets received by filter
0 packets dropped by kernel

That's the result , seems to be OK.
I've reinstalled the whole proxmox , and i'll try from the start.
Now this is my default settings ;

auto lo
iface lo inet loopback
iface eth0 inet manual

auto vmbr0
iface vmbr0 inet static
        address xxx.xxx.211.178
        netmask 255.255.255.240
        gateway xxx.xxx.211.177
        bridge_ports eth0
        bridge_stp off
        bridge_fd 0

With added eth0 since it didn't come by default and I believe it's needed. Is there anything else I should add before trying again?

 

[bobalo]

Tried again , same result , KVM node has no internet access.
Trying to see it's IP via ipconfig it returns a totally different subnet and IP address , like proxmox is not giving it the right address
EDIT , manually adding the IP to the node via network settings in WIN2008r2 seems to work! I don't know why proxmox can't forward it the right address , but hey it works!
Thanks for help