[    6.706516] 8021q: adding VLAN 0 to HW filter on device b0
[    6.706639] t0: Port device b0 added
[    6.731856] 8021q: adding VLAN 0 to HW filter on device t0
[    6.870894] t0: Port device b0 removed
[    6.870970] b0 (unregistering): Released all slaves