[  519.769341] bond0: (slave eth0): making interface the new active one
[  519.769433] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.982996] bond0: (slave eth0): Releasing backup interface
[  524.063445] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.212521] bond0: (slave eth0): Releasing backup interface
[  528.244475] bond0 (unregistering): Released all slaves