Mar 6 21:53:28 omv kernel: [ 1407.433520] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
Mar 7 00:17:50 omv kernel: [10069.829177] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
Mar 7 02:26:26 omv kernel: [17786.992635] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
Mar 7 02:26:43 omv kernel: [17803.125160] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
Mar 7 02:34:58 omv kernel: [18299.011824] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
Mar 7 03:01:23 omv kernel: [19883.197473] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
Mar 7 03:12:24 omv kernel: [20544.214044] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
Mar 7 03:18:42 omv kernel: [20923.112114] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
Mar 7 03:26:00 omv kernel: [21360.376472] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
Mar 7 03:41:02 omv kernel: [22262.300214] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
Mar 7 04:03:36 omv kernel: [23616.335346] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
Mar 7 05:32:45 omv kernel: [28965.676802] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
Mar 7 06:49:01 omv kernel: [33541.861495] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
Mar 7 06:56:35 omv kernel: [33995.768491] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
Mar 7 08:01:18 omv kernel: [37878.938702] r8169 0000:03:00.0 enp3s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).
请问如上代码报错是什么意思?网卡?2.5g网卡有问题?不兼容?