netplan bond not working (ubuntu 18.04)

[lemerp]

Hey guys,

today I set up a network bond environment under Ubuntu 18.04 (4.15.0-42-generic). After running "sudo netplan apply" interface "bond0" with the given IP comes up. But it is not possible to tranfer any packets through this interface, neither in nor out. This issue exists with the latest dev versions of VirtualBox 5.2 and 6, too.

My netplan configuration:

network:
  version: 2
  renderer: networkd
  ethernets:
    eth0:
      dhcp4: no
      dhcp6: no
    eth1:
      dhcp4: no
      dhcp6: no
  bonds:
    bond0:
      dhcp4: no
      dhcp6: no
      interfaces: [eth0, eth1]
      addresses: [192.168.56.81/24]
      parameters:
        mode: active-backup
        mii-monitor-interval: 100
        primary: eth0

[lemerp]

Added a better readable version of my netplan setup.

[Valery Ushakov]

You didn't provide any information on how VM is actually set up. Which network attachments do you use for virtual network cards, etc.

[lemerp]

Sorry for the delay. I tried "Bridged Adapter" and "Host-only Adapter", both with adapter type "Intel PRO/1000 MT Desktop (82540EM)" and "PCnet-Fast III (Am79C973)".

I will attach the full config of the vm right now.