[  514.048475] bond0: (slave eth0): making interface the new active one
[  514.048566] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.300135] bond0: (slave eth0): Releasing backup interface
[  518.411964] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.588012] bond0: (slave eth0): Releasing backup interface
[  522.621872] bond0 (unregistering): Released all slaves