[  520.101064] bond0: (slave eth0): making interface the new active one
[  520.101178] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.300042] bond0: (slave eth0): Releasing backup interface
[  524.370392] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.527726] bond0: (slave eth0): Releasing backup interface
[  528.565595] bond0 (unregistering): Released all slaves