[  516.060660] bond0: (slave eth0): making interface the new active one
[  516.060754] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.273846] bond0: (slave eth0): Releasing backup interface
[  520.332701] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.520410] bond0: (slave eth0): Releasing backup interface
[  524.535292] bond0 (unregistering): Released all slaves