[  516.144770] bond0: (slave eth0): making interface the new active one
[  516.144854] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.329096] bond0: (slave eth0): Releasing backup interface
[  520.394293] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.559362] bond0: (slave eth0): Releasing backup interface
[  524.593305] bond0 (unregistering): Released all slaves