[  539.322797] bond0: (slave eth0): making interface the new active one
[  539.322877] bond0: (slave eth0): Enslaving as an active interface with an up link
[  543.505928] bond0: (slave eth0): Releasing backup interface
[  543.593064] bond0: (slave eth0): Enslaving as an active interface with an up link
[  547.797742] bond0: (slave eth0): Releasing backup interface
[  547.824691] bond0 (unregistering): Released all slaves