[  517.550570] bond0: (slave eth0): making interface the new active one
[  517.550654] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.749227] bond0: (slave eth0): Releasing backup interface
[  521.845671] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.049430] bond0: (slave eth0): Releasing backup interface
[  526.079946] bond0 (unregistering): Released all slaves