unregister_netdevice: waiting for macvlan1 to become free. Usage count = 2
unregister_netdevice: waiting for veth1_vlan to become free. Usage count = 2
ref_tracker: netdev@ffff88811c6e4658 has 1/1 users at
     macvlan_init+0x73f/0x900
     register_netdevice+0x6c6/0x1ec0
     macvlan_common_newlink+0x127c/0x19e0
     rtnl_newlink_create+0x329/0xb70
     rtnl_newlink+0x166a/0x1bb0
     rtnetlink_rcv_msg+0x7d5/0xbe0
     netlink_rcv_skb+0x232/0x4b0
     netlink_unicast+0x75c/0x8e0
     netlink_sendmsg+0x813/0xb40
     __sys_sendto+0x672/0x710
     __x64_sys_sendto+0xde/0x100
     do_syscall_64+0x15f/0xf80
     entry_SYSCALL_64_after_hwframe+0x77/0x7f

