[  520.079096] bond0: (slave eth0): making interface the new active one
[  520.079192] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.320556] bond0: (slave eth0): Releasing backup interface
[  524.423419] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.613172] bond0: (slave eth0): Releasing backup interface
[  528.640195] bond0 (unregistering): Released all slaves