[  517.769378] bond0: (slave eth0): making interface the new active one
[  517.769480] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.014156] bond0: (slave eth0): Releasing backup interface
[  522.138077] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.296426] bond0: (slave eth0): Releasing backup interface
[  526.328314] bond0 (unregistering): Released all slaves