unregister_netdevice: waiting for bridge0 to become free. Usage count = 2
ref_tracker: netdev@ffff8881baed4620 has 1/1 users at
     netdev_get_by_index+0x79/0xb0
     fib6_nh_init+0x1f2/0x1fd0
     ip6_route_info_create_nh+0x16a/0xad0
     inet6_rtm_newroute+0x581/0x19e0
     rtnetlink_rcv_msg+0x7d5/0xbe0
     netlink_rcv_skb+0x232/0x4b0
     netlink_unicast+0x80f/0x9b0
     netlink_sendmsg+0x813/0xb40
     ____sys_sendmsg+0xa68/0xad0
     ___sys_sendmsg+0x2a5/0x360
     __x64_sys_sendmsg+0x1bd/0x2a0
     do_syscall_64+0x14d/0xf80
     entry_SYSCALL_64_after_hwframe+0x77/0x7f

