unregister_netdevice: waiting for vlan0 to become free. Usage count = 2
unregister_netdevice: waiting for veth0_vlan to become free. Usage count = 2
ref_tracker: netdev@ffff88817898c658 has 1/1 users at
     vlan_dev_init+0xbb9/0xf00
     register_netdevice+0x6c7/0x1f00
     register_vlan_dev+0x3a0/0x850
     vlan_newlink+0x4b2/0x610
     rtnl_newlink_create+0x310/0xb00
     rtnl_newlink+0x167f/0x1bd0
     rtnetlink_rcv_msg+0x802/0xc00
     netlink_rcv_skb+0x226/0x4a0
     netlink_unicast+0x7bb/0x940
     netlink_sendmsg+0x813/0xb40
     __sys_sendto+0x672/0x710
     __x64_sys_sendto+0xde/0x100
     do_syscall_64+0x174/0x580
     entry_SYSCALL_64_after_hwframe+0x77/0x7f

