[  843.694577][T20980] bond0: (slave eth0): making interface the new active one
[  843.695108][T20980] bond0: (slave eth0): Enslaving as an active interface with an up link
[  843.737154][T20981] 8021q: adding VLAN 0 to HW filter on device bond0
[  847.951440][T20984] bond0: (slave eth0): Releasing backup interface
[  848.101855][T20987] bond0: (slave eth0): Enslaving as an active interface with an up link
[  848.145713][T20988] 8021q: adding VLAN 0 to HW filter on device bond0
[  852.303695][  T220] bond0: (slave eth0): Releasing backup interface
[  852.352103][  T220] bond0 (unregistering): Released all slaves