[  504.739952] bond0: (slave eth0): making interface the new active one
[  504.740051] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.895878] bond0: (slave eth0): Releasing backup interface
[  508.971221] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.119431] bond0: (slave eth0): Releasing backup interface
[  513.151369] bond0 (unregistering): Released all slaves