unregister_netdevice: waiting for eth3 to become free. Usage count = 3
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4043 [inline]
 netdev_tracker_alloc+0x68/0xb4 include/linux/netdevice.h:4055
 fib_create_info+0x126c/0x1e60 net/ipv4/fib_semantics.c:1552
 fib_table_insert+0x1a4/0x1574 net/ipv4/fib_trie.c:1236
 fib_magic net/ipv4/fib_frontend.c:1104 [inline]
 fib_add_ifaddr+0x368/0x122c net/ipv4/fib_frontend.c:1126
 fib_inetaddr_event+0x124/0x2fc net/ipv4/fib_frontend.c:1440
 notifier_call_chain kernel/notifier.c:87 [inline]
 blocking_notifier_call_chain+0xf0/0x198 kernel/notifier.c:382
 __inet_insert_ifa+0x8ac/0xa8c net/ipv4/devinet.c:569
 inet_rtm_newaddr+0xe74/0x1744 net/ipv4/devinet.c:971
 rtnetlink_rcv_msg+0x72c/0xd94 net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2493
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6168
 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
 netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1337
 netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1859
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x55c/0x848 net/socket.c:2519
 ___sys_sendmsg net/socket.c:2573 [inline]
 __sys_sendmsg+0x26c/0x33c net/socket.c:2602
 __do_sys_sendmsg net/socket.c:2611 [inline]
 __se_sys_sendmsg net/socket.c:2609 [inline]
 __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2609
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4043 [inline]
 netdev_tracker_alloc include/linux/netdevice.h:4055 [inline]
 fib6_nh_init+0x640/0x1ca0 net/ipv6/route.c:3626
 ip6_route_info_create+0x7ac/0xf14 net/ipv6/route.c:3804
 addrconf_f6i_alloc+0x2c0/0x5cc net/ipv6/route.c:4579
 ipv6_add_addr+0x3d0/0xc9c net/ipv6/addrconf.c:1121
 inet6_addr_add+0x370/0x818 net/ipv6/addrconf.c:3014
 inet6_rtm_newaddr+0x720/0x1ec8 net/ipv6/addrconf.c:4976
 rtnetlink_rcv_msg+0x72c/0xd94 net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2493
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6168
 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
 netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1337
 netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1859
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x55c/0x848 net/socket.c:2519
 ___sys_sendmsg net/socket.c:2573 [inline]
 __sys_sendmsg+0x26c/0x33c net/socket.c:2602
 __do_sys_sendmsg net/socket.c:2611 [inline]
 __se_sys_sendmsg net/socket.c:2609 [inline]
 __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2609
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
netdevsim netdevsim4 netdevsim0: renamed from eth0
netdevsim netdevsim4 netdevsim1: renamed from eth1
netdevsim netdevsim4 netdevsim2: renamed from eth2
netdevsim netdevsim4 netdevsim3: renamed from eth3