[  516.851135] bond0: (slave eth0): making interface the new active one
[  516.851225] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.060549] bond0: (slave eth0): Releasing backup interface
[  521.186753] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.409694] bond0: (slave eth0): Releasing backup interface
[  525.442909] bond0 (unregistering): Released all slaves