vmbr1 disapeared

Cybodog

New Member
May 8, 2009
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0
1
Made vm1, added two NICs, eth0 bridged to vmbr0->host eth0, eth1 bridged to vmbr1 bridged to no physical eth (wanted internal only networking).

Made vm2 added one NIC bridged to vmbr1. I was able to network using vm1 as a gateway.

Used webUI to add vmbr1, used no IP address and no physical device bridged. Set the IP on eth1 vm1 and eth0 vm2 to 192.168.1.0/24

Today, I started proxmox up and my vms would not start. The error was could not bring up vmbr1 (it did not exists) could not bring up tap1.

Looking on the webUI, vmbr1 was not there.

drove me nuts adding it again and not seeing a resolution until I noticed a little red line saying "network settings changed, please reboot to take effect". Rebooted.

vmbr1 came up as did the vms.

issued shutdown -h now via cli to test re-producing the symptoms.

box came back up with out issues.

I know this is a "ghost" problem but I list it here in the event someone else sees this behavior.

Code:
/etc/network/interfaces
# network interface settings
auto lo
iface lo inet loopback

iface eth0 inet manual

iface eth1 inet manual

auto vmbr0
iface vmbr0 inet static
    address  192.168.200.101
    netmask  255.255.255.0
    gateway  192.168.200.1
    bridge_ports eth0
    bridge_stp off
    bridge_fd 0

auto vmbr1
iface vmbr1 inet manual
    bridge_ports none
    bridge_stp off
    bridge_fd 0
Two questions:

1. when I make a bridge not connected to a phy NIC, what should I put into the IP block. My internal only IP is 192.168.1.10 for vm1 and .11 for vm2. Should I put 192.168.1.0?

2. What is the tag for "code" I tried <CODE> and <QUOTE> and neither of them worked. never mind. It does not work in the previewer mode, but it quite obviously works in the "posted" mode.
 
Last edited:
Today, I started proxmox up and my vms would not start. The error was could not bring up vmbr1 (it did not exists) could not bring up tap1.

Proxmox VE writes changes to /etc/network/interface.new, and copies that file to /etc/network/interfaces on next reboot. Maybe you edited etc/network/interfaces directly?

1. when I make a bridge not connected to a phy NIC, what should I put into the IP block. My internal only IP is 192.168.1.10 for vm1 and .11 for vm2. Should I put 192.168.1.0?

there is no need to assign an IP

2. What is the tag for "code" I tried <CODE> and <QUOTE> and neither of them worked. never mind. It does not work in the previewer mode, but it quite obviously works in the "posted" mode.

both tags work here even in preview mode.