[  504.132240] bond0: (slave eth0): making interface the new active one
[  504.132315] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.308814] bond0: (slave eth0): Releasing backup interface
[  508.385047] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.534467] bond0: (slave eth0): Releasing backup interface
[  512.575364] bond0 (unregistering): Released all slaves