[  626.259305] 8021q: adding VLAN 0 to HW filter on device b0
[  626.259376] t0: Port device b0 added
[  626.277312] 8021q: adding VLAN 0 to HW filter on device t0
[  626.376627] t0: Port device b0 removed
[  626.376697] b0 (unregistering): Released all slaves