At reboot LACP bonding two separate nics causes 2nd nic to be inactive.

dtk31883

Member
Feb 24, 2020
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Hi, I have proxmox 8.1.3 setup in with LACP bonding two separate usb nics that works when configured and after "ifdown -a; ifup -a" or apply config. But after reboot one of the bonded usb nics becomes inactive. I tried different bonding types life active-backup and the same thing occurs after reboot. Both nics are active after reboot if they are not bonded. What is happening at reboot that is different to apply config/setup for bonding? Do I need to add something at pre-up/post-up in interfaces? Is this a nic driver issue?

Dmesg error:
[ 6.333673] bond0: (slave enxxxxxxxxxx1): Enslaving as a backup interface with a down link
[ 6.336471] bond0: (slave enxxxxxxxxxx2): Error 6 calling set_mac_address

interfaces:
auto enxxxxxxxxxx1
iface enxxxxxxxxxx1 inet manual
mtu 9000

auto enxxxxxxxxxx2
iface enxxxxxxxxxx2 inet manual
mtu 9000

auto bond0
iface bond0 inet manual
bond-slaves enxxxxxxxxx2 enxxxxxxxxxx1
bond-miimon 100
bond-mode 802.3ad
bond-xmit-hash-policy layer2
mtu 9000

Similar issue:
https://forum.proxmox.com/threads/usb-netzwerkadapter-error-command-ifreload-a.123641/
sorry translate to english but reports same error in dmesg.