[  520.085499] bond0: (slave eth0): making interface the new active one
[  520.085578] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.233875] bond0: (slave eth0): Releasing backup interface
[  524.299467] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.463213] bond0: (slave eth0): Releasing backup interface
[  528.495232] bond0 (unregistering): Released all slaves