[  504.640042] bond0: (slave eth0): making interface the new active one
[  504.640117] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.828711] bond0: (slave eth0): Releasing backup interface
[  508.896259] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.059290] bond0: (slave eth0): Releasing backup interface
[  513.092320] bond0 (unregistering): Released all slaves