[10081.854795][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[10081.855219][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10081.855219][T12167]      netdev_get_by_index+0x5e/0x80
[10081.855219][T12167]      fib6_nh_init+0x3d8/0x1580
[10081.855219][T12167]      ip6_route_info_create+0xf18/0x17d0
[10081.855219][T12167]      addrconf_f6i_alloc+0x315/0x560
[10081.855219][T12167]      ipv6_add_addr+0x411/0x2000
[10081.855219][T12167]      inet6_addr_add+0x30e/0xa40
[10081.855219][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[10081.855219][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10081.855219][T12167]      netlink_rcv_skb+0x130/0x360
[10081.855219][T12167]      netlink_unicast+0x449/0x710
[10081.855219][T12167]      netlink_sendmsg+0x723/0xbe0
[10081.855219][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10081.855219][T12167]      ___sys_sendmsg+0xee/0x170
[10081.855219][T12167]      __sys_sendmsg+0xcd/0x170
[10081.855219][T12167]      do_syscall_64+0xc6/0x1e0
[10081.855219][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10081.855219][T12167] 
[10081.857765][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10081.857765][T12167]      ipv6_add_dev+0x3ba/0x11c0
[10081.857765][T12167]      ipv6_find_idev+0x102/0x170
[10081.857765][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10081.857765][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10081.857765][T12167]      netlink_rcv_skb+0x130/0x360
[10081.857765][T12167]      netlink_unicast+0x449/0x710
[10081.857765][T12167]      netlink_sendmsg+0x723/0xbe0
[10081.857765][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10081.857765][T12167]      ___sys_sendmsg+0xee/0x170
[10081.857765][T12167]      __sys_sendmsg+0xcd/0x170
[10081.857765][T12167]      do_syscall_64+0xc6/0x1e0
[10081.857765][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10081.857765][T12167] 
[10081.859735][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10081.859735][T12167]      neigh_parms_alloc+0x1e5/0x510
[10081.859735][T12167]      ipv6_add_dev+0x2fe/0x11c0
[10081.859735][T12167]      ipv6_find_idev+0x102/0x170
[10081.859735][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10081.859735][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10081.859735][T12167]      netlink_rcv_skb+0x130/0x360
[10081.859735][T12167]      netlink_unicast+0x449/0x710
[10081.859735][T12167]      netlink_sendmsg+0x723/0xbe0
[10081.859735][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10081.859735][T12167]      ___sys_sendmsg+0xee/0x170
[10081.859735][T12167]      __sys_sendmsg+0xcd/0x170
[10081.859735][T12167]      do_syscall_64+0xc6/0x1e0
[10081.859735][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10081.859735][T12167] 
[10082.023119][T12659] ACPI: PM: Preparing to enter system sleep state S5
[10082.024578][T12659] kvm: exiting hardware virtualization
[10082.024900][T12659] reboot: Power down