unregister_netdevice: waiting for lo to become free. Usage count = 3330
ref_tracker: netdev@ffff8880332b6610 has 3329/3329 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4349 [inline]
     netdev_hold include/linux/netdevice.h:4378 [inline]
     dst_init+0xda/0x580 net/core/dst.c:52
     dst_alloc+0xbb/0x1a0 net/core/dst.c:93
     rt_dst_alloc+0x35/0x3a0 net/ipv4/route.c:1645
     ip_route_input_slow+0x1671/0x3df0 net/ipv4/route.c:2423
     ip_route_input_rcu net/ipv4/route.c:2537 [inline]
     ip_route_input_noref+0x120/0x2e0 net/ipv4/route.c:2548
     ip_rcv_finish_core+0x46f/0x22a0 net/ipv4/ip_input.c:371
     ip_list_rcv_finish+0x1b8/0x720 net/ipv4/ip_input.c:616
     ip_sublist_rcv net/ipv4/ip_input.c:642 [inline]
     ip_list_rcv+0x335/0x450 net/ipv4/ip_input.c:676
     __netif_receive_skb_list_ptype net/core/dev.c:6034 [inline]
     __netif_receive_skb_list_core+0x752/0x950 net/core/dev.c:6081
     __netif_receive_skb_list net/core/dev.c:6133 [inline]
     netif_receive_skb_list_internal+0x752/0xdb0 net/core/dev.c:6224
     netif_receive_skb_list net/core/dev.c:6276 [inline]
     netif_receive_skb_list+0x4d/0x4b0 net/core/dev.c:6266
     xdp_recv_frames net/bpf/test_run.c:280 [inline]
     xdp_test_run_batch.constprop.0+0x146b/0x1ad0 net/bpf/test_run.c:361
     bpf_test_run_xdp_live+0x34d/0x500 net/bpf/test_run.c:390
     bpf_prog_test_run_xdp+0x824/0x1590 net/bpf/test_run.c:1322
     bpf_prog_test_run kernel/bpf/syscall.c:4590 [inline]
     __sys_bpf+0x1050/0x4de0 kernel/bpf/syscall.c:6047
     __do_sys_bpf kernel/bpf/syscall.c:6139 [inline]
     __se_sys_bpf kernel/bpf/syscall.c:6137 [inline]
     __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:6137