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David Le Borgne
David Le Borgne
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We are setting up a new Proxmox 6.4 (based on Debian 10.9) host on OVH (AvanceAdvance-2) hardware, using the OVH provided template.

In order to create a "virtual" bridge for VMs and LXCs, we added these lines into /etc/network/interfaces :

auto vmbr1 iface vmbr1 inet static address 10.0.1.254/24 bridge-ports none bridge-stp off bridge-fd 0

This configuration works fine on all our Proxmox hosts, but fails on the new machine: reboot takes 20 minutes on "Starting Raise network interfaces", fails with "Failed to start Raise network interfaces" and the bridge interface is not up.

After rebooting without the vmbr1 stuff, I could see that systemctl restart networking hangs on "Starting to wait for vmbr1 link to be up"

May 12 10:01:49 pve7 ifup[7300]: Waiting for vmbr1 to get ready (MAXWAIT is 2 seconds). May 12 10:01:49 pve7 ifup[7300]: Disabling IPv6 autoconfiguration for vmbr1 May 12 10:01:49 pve7 ifup[7300]: net.ipv6.conf.vmbr1.accept_ra = 0 May 12 10:01:49 pve7 ifup[7300]: net.ipv6.conf.vmbr1.accept_dad = 0 May 12 10:01:49 pve7 ifup[7300]: net.ipv6.conf.vmbr1.autoconf = 0 May 12 10:01:49 pve7 ifup[7300]: Starting to wait for vmbr1 link to be up at Wed May 12 10:01:49 UTC 2021

We are setting up a new Proxmox 6.4 (based on Debian 10.9) host on OVH (Avance-2) hardware, using the OVH provided template.

In order to create a "virtual" bridge for VMs and LXCs, we added these lines into /etc/network/interfaces :

auto vmbr1 iface vmbr1 inet static address 10.0.1.254/24 bridge-ports none bridge-stp off bridge-fd 0

This configuration works fine on all our Proxmox hosts, but fails on the new machine: reboot takes 20 minutes on "Starting Raise network interfaces", fails with "Failed to start Raise network interfaces" and the bridge interface is not up.

After rebooting without the vmbr1 stuff, I could see that systemctl restart networking hangs on "Starting to wait for vmbr1 link to be up"

May 12 10:01:49 pve7 ifup[7300]: Waiting for vmbr1 to get ready (MAXWAIT is 2 seconds). May 12 10:01:49 pve7 ifup[7300]: Disabling IPv6 autoconfiguration for vmbr1 May 12 10:01:49 pve7 ifup[7300]: net.ipv6.conf.vmbr1.accept_ra = 0 May 12 10:01:49 pve7 ifup[7300]: net.ipv6.conf.vmbr1.accept_dad = 0 May 12 10:01:49 pve7 ifup[7300]: net.ipv6.conf.vmbr1.autoconf = 0 May 12 10:01:49 pve7 ifup[7300]: Starting to wait for vmbr1 link to be up at Wed May 12 10:01:49 UTC 2021

We are setting up a new Proxmox 6.4 (based on Debian 10.9) host on OVH (Advance-2) hardware, using the OVH provided template.

In order to create a "virtual" bridge for VMs and LXCs, we added these lines into /etc/network/interfaces :

auto vmbr1 iface vmbr1 inet static address 10.0.1.254/24 bridge-ports none bridge-stp off bridge-fd 0

This configuration works fine on all our Proxmox hosts, but fails on the new machine: reboot takes 20 minutes on "Starting Raise network interfaces", fails with "Failed to start Raise network interfaces" and the bridge interface is not up.

After rebooting without the vmbr1 stuff, I could see that systemctl restart networking hangs on "Starting to wait for vmbr1 link to be up"

May 12 10:01:49 pve7 ifup[7300]: Waiting for vmbr1 to get ready (MAXWAIT is 2 seconds). May 12 10:01:49 pve7 ifup[7300]: Disabling IPv6 autoconfiguration for vmbr1 May 12 10:01:49 pve7 ifup[7300]: net.ipv6.conf.vmbr1.accept_ra = 0 May 12 10:01:49 pve7 ifup[7300]: net.ipv6.conf.vmbr1.accept_dad = 0 May 12 10:01:49 pve7 ifup[7300]: net.ipv6.conf.vmbr1.autoconf = 0 May 12 10:01:49 pve7 ifup[7300]: Starting to wait for vmbr1 link to be up at Wed May 12 10:01:49 UTC 2021
Source Link
David Le Borgne
David Le Borgne
  • 181
  • 11

Networking start failed on OVH Proxmox 6.4 if a bridge has no interface

We are setting up a new Proxmox 6.4 (based on Debian 10.9) host on OVH (Avance-2) hardware, using the OVH provided template.

In order to create a "virtual" bridge for VMs and LXCs, we added these lines into /etc/network/interfaces :

auto vmbr1 iface vmbr1 inet static address 10.0.1.254/24 bridge-ports none bridge-stp off bridge-fd 0

This configuration works fine on all our Proxmox hosts, but fails on the new machine: reboot takes 20 minutes on "Starting Raise network interfaces", fails with "Failed to start Raise network interfaces" and the bridge interface is not up.

After rebooting without the vmbr1 stuff, I could see that systemctl restart networking hangs on "Starting to wait for vmbr1 link to be up"

May 12 10:01:49 pve7 ifup[7300]: Waiting for vmbr1 to get ready (MAXWAIT is 2 seconds). May 12 10:01:49 pve7 ifup[7300]: Disabling IPv6 autoconfiguration for vmbr1 May 12 10:01:49 pve7 ifup[7300]: net.ipv6.conf.vmbr1.accept_ra = 0 May 12 10:01:49 pve7 ifup[7300]: net.ipv6.conf.vmbr1.accept_dad = 0 May 12 10:01:49 pve7 ifup[7300]: net.ipv6.conf.vmbr1.autoconf = 0 May 12 10:01:49 pve7 ifup[7300]: Starting to wait for vmbr1 link to be up at Wed May 12 10:01:49 UTC 2021