我有一个带有交换机的网络，每个交换机上的每个端口上的 pvid 都设置为 1。服务器位于具有权威 dhcp 的 linux debian 上。某些 IP 地址无权访问网关。我不知道什么是阻塞：交换机或网关。
最奇怪的是，在 ping 请求时，网关收到它并回答它。客户端也发送请求并接收应答，但 ping 程序不显示回复。我用 tcpdump 检查了回复：
客户端 tcpdump：
18:18:20.283614 ARP, Request who-has 192.168.0.102 tell 192.168.1.1, length 46
18:18:21.135348 IP kicok-K53SJ > 192.168.1.1: ICMP echo request, id 6937, seq 46, length 64
18:18:43.766916 ARP, Request who-has 192.168.0.101 tell 192.168.1.1, length 46
18:18:44.135326 IP kicok-K53SJ > 192.168.1.1: ICMP echo request, id 6937, seq 69, length 64
18:18:44.164008 IP 192.168.1.1 > kicok-K53SJ: ICMP echo reply, id 6937, seq 69, length 64
18:18:44.238354 ARP, Request who-has 192.168.1.1 tell 192.168.0.234, length 46
18:18:44.618056 ARP, Request who-has 192.168.0.102 tell 192.168.1.1, length 46
18:19:09.135332 IP kicok-K53SJ > 192.168.1.1: ICMP echo request, id 6937, seq 94, length 64
18:19:09.139740 IP 192.168.1.1 > kicok-K53SJ: ICMP echo reply, id 6937, seq 94, length 64
18:19:09.332947 ARP, Request who-has 192.168.0.102 tell 192.168.1.1, length 46
18:19:10.135329 IP kicok-K53SJ > 192.168.1.1: ICMP echo request, id 6937, seq 95, length 64
18:19:10.137030 IP 192.168.1.1 > kicok-K53SJ: ICMP echo reply, id 6937, seq 95, length 64
18:19:11.135345 IP kicok-K53SJ > 192.168.1.1: ICMP echo request, id 6937, seq 96, length 64
18:19:33.771534 ARP, Request who-has 192.168.0.101 tell 192.168.1.1, length 46
18:19:34.121969 ARP, Request who-has 192.168.1.1 tell 192.168.0.55, length 46
18:19:34.135323 IP kicok-K53SJ > 192.168.1.1: ICMP echo request, id 6937, seq 119, length 64
18:19:34.139833 IP 192.168.1.1 > kicok-K53SJ: ICMP echo reply, id 6937, seq 119, length 64
18:19:34.218611 ARP, Request who-has 192.168.0.102 tell 192.168.1.1, length 46
18:19:34.771301 ARP, Request who-has 192.168.0.101 tell 192.168.1.1, length 46
18:19:35.135326 IP kicok-K53SJ > 192.168.1.1: ICMP echo request, id 6937, seq 120, length 64
18:19:58.969345 ARP, Request who-has 192.168.0.102 tell 192.168.1.1, length 46
18:19:59.135327 IP kicok-K53SJ > 192.168.1.1: ICMP echo request, id 6937, seq 144, length 64
18:19:59.143169 IP 192.168.1.1 > kicok-K53SJ: ICMP echo reply, id 6937, seq 144, length 64
18:18:36.955859 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 60, length 64
18:18:37.950910 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 61, length 64
18:18:37.955877 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 61, length 64
18:18:38.950981 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 62, length 64
18:18:38.956643 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 62, length 64
18:18:39.951068 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 63, length 64
18:18:39.956960 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 63, length 64
18:18:40.583070 IP 192.168.1.133.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 101.0.168.192.in-addr.arpa. (44)
18:18:40.951113 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 64, length 64
18:18:40.969777 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 64, length 64
18:18:41.584863 IP 192.168.1.133.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 101.0.168.192.in-addr.arpa. (44)
18:18:41.951164 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 65, length 64
18:18:41.965874 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 65, length 64
18:18:42.951232 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 66, length 64
18:18:42.957989 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 66, length 64
18:18:43.587702 IP 192.168.1.133.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 101.0.168.192.in-addr.arpa. (44)
18:18:43.951288 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 67, length 64
18:18:43.978219 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 67, length 64
18:18:44.951377 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 68, length 64
18:18:44.980280 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 68, length 64
18:18:45.485589 IP 192.168.1.133.60758 > xxx.pl.domain: 57978+ PTR? 210.0.168.192.in-addr.arpa. (44)
18:18:45.490642 IP xxx.pl.domain > 192.168.1.133.60758: 57978 NXDomain 0/1/0 (115)
18:18:45.951413 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 69, length 64
18:18:45.979881 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 69, length 64
18:18:46.951478 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 70, length 64
18:18:46.972661 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 70, length 64
18:18:47.951557 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 71, length 64
18:18:47.982161 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 71, length 64
18:18:48.951626 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 72, length 64
18:18:48.977249 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 72, length 64
18:18:49.951717 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 73, length 64
18:18:49.953255 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 73, length 64
18:18:50.491068 IP 192.168.1.133.43288 > dns.xxx.pl.domain: 57978+ PTR? 210.0.168.192.in-addr.arpa. (44)
18:18:50.566751 IP dns.xxx.pl.domain > 192.168.1.133.43288: 57978 NXDomain 0/1/0 (115)
18:18:50.951760 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 74, length 64
18:18:50.953278 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 74, length 64
18:18:51.951802 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 75, length 64
18:18:51.960164 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 75, length 64
18:18:52.951854 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 76, length 64
18:18:52.953091 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 76, length 64
18:18:53.951879 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 77, length 64
18:18:53.953604 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 77, length 64
18:18:54.951972 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 78, length 64
18:18:54.954378 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 78, length 64
18:18:55.496499 IP 192.168.1.133.60758 > xxx.xxx.pl.domain: 57978+ PTR? 210.0.168.192.in-addr.arpa. (44)
18:18:55.501014 IP xxx.pl.domain > 192.168.1.133.60758: 57978 NXDomain 0/1/0 (115)
18:18:55.951978 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 79, length 64
18:18:55.956163 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 79, length 64
18:18:56.952149 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 80, length 64
18:18:56.960399 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 80, length 64
18:18:57.952172 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 81, length 64
18:18:57.952201 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 81, length 64
18:18:58.952182 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 82, length 64
18:18:58.952203 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 82, length 64
18:18:59.952278 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 83, length 64
18:18:59.958884 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 83, length 64
18:19:00.501918 IP 192.168.1.133.43288 > xxx.pl.domain: 57978+ PTR? 210.0.168.192.in-addr.arpa. (44)
18:19:00.507208 IP dns.xxx.pl.domain > 192.168.1.133.43288: 57978 NXDomain 0/1/0 (115)
18:19:00.952422 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 84, length 64
18:19:00.955510 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 84, length 64
18:19:01.952401 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 85, length 64
18:19:01.952870 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 85, length 64
18:19:02.952495 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 86, length 64
18:19:02.953525 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 86, length 64
18:19:03.952538 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 87, length 64
18:19:03.952904 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 87, length 64
18:19:04.952573 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 88, length 64
18:19:04.953364 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 88, length 64
18:19:05.608089 IP 192.168.1.133.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 210.0.168.192.in-addr.arpa. (44)
18:19:05.952649 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 89, length 64
18:19:05.952904 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 89, length 64
18:19:06.609875 IP 192.168.1.133.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 210.0.168.192.in-addr.arpa. (44)
18:19:06.952744 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 90, length 64
18:19:06.953540 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 90, length 64
18:19:07.952727 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 91, length 64
18:19:07.953864 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 91, length 64
18:19:08.612728 IP 192.168.1.133.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 210.0.168.192.in-addr.arpa. (44)
18:19:08.952852 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 92, length 64
18:19:08.954535 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 92, length 64
18:19:09.952912 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 93, length 64
18:19:09.953297 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 93, length 64
18:19:10.510580 IP 192.168.1.133.35953 > xxx.pl.domain: 64751+ PTR? 155.0.168.192.in-addr.arpa. (44)
18:19:10.518416 IP xxx.pl.domain > 192.168.1.133.35953: 64751 NXDomain 0/1/0 (115)
18:19:10.952931 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 94, length 64
18:19:10.957117 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 94, length 64
18:19:11.953017 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 95, length 64
18:19:11.954464 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 95, length 64
18:19:12.953078 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 96, length 64
18:19:12.957269 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 96, length 64
18:19:13.953118 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 97, length 64
18:19:13.956323 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 97, length 64
18:19:14.953260 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 98, length 64
18:19:14.954302 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 98, length 64
18:19:15.516043 IP 192.168.1.133.55284 > dns.xxx.pl.domain: 64751+ PTR? 155.0.168.192.in-addr.arpa. (44)
18:19:15.591622 IP dns.xxx.pl.domain > 192.168.1.133.55284: 64751 NXDomain 0/1/0 (115)
18:19:15.953235 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 99, length 64
18:19:15.953812 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 99, length 64
18:19:16.953311 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 100, length 64
18:19:16.955149 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 100, length 64
18:19:17.953353 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 101, length 64
18:19:17.957049 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 101, length 64
18:19:18.953643 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 102, length 64
18:19:18.954942 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 102, length 64
18:19:18.964016 ARP, Request who-has 192.168.1.1 tell 192.168.1.133, length 46
18:19:18.964654 ARP, Reply 192.168.1.1 is-at 44:1e:a1:3d:e3:36 (oui Unknown), length 28
18:19:19.953499 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 103, length 64
18:19:19.954509 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 103, length 64
18:19:20.521712 IP 192.168.1.133.35953 > xxx.pl.domain: 64751+ PTR? 155.0.168.192.in-addr.arpa. (44)
18:19:20.524172 IP xxx.pl.domain > 192.168.1.133.35953: 64751 NXDomain 0/1/0 (115)
18:19:20.953602 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 104, length 64
18:19:20.953625 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 104, length 64
18:19:21.953619 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 105, length 64
18:19:21.955911 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 105, length 64
18:19:22.953700 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 106, length 64
18:19:22.953724 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 106, length 64
18:19:23.953721 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 107, length 64
18:19:23.954634 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 107, length 64
18:19:24.953837 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 108, length 64
18:19:24.955166 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 108, length 64
18:19:25.526973 IP 192.168.1.133.55284 > dns.xxx.pl.domain: 64751+ PTR? 155.0.168.192.in-addr.arpa. (44)
18:19:25.527718 IP dns.xxx.pl.domain > 192.168.1.133.55284: 64751 NXDomain 0/1/0 (115)
18:19:25.953872 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 109, length 64
18:19:25.954173 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 109, length 64
18:19:26.953926 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 110, length 64
18:19:26.954283 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 110, length 64
18:19:27.953975 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 111, length 64
18:19:27.954940 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 111, length 64
18:19:28.954047 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 112, length 64
18:19:28.954219 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 112, length 64
18:19:29.954161 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 113, length 64
18:19:29.956431 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 113, length 64
18:19:30.633106 IP 192.168.1.133.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 155.0.168.192.in-addr.arpa. (44)
18:19:30.954208 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 114, length 64
18:19:30.954535 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 114, length 64
18:19:31.634965 IP 192.168.1.133.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 155.0.168.192.in-addr.arpa. (44)
18:19:31.954242 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 115, length 64
18:19:31.956892 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 115, length 64
18:19:32.954308 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 116, length 64
18:19:32.954323 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 116, length 64
18:19:33.637792 IP 192.168.1.133.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 155.0.168.192.in-addr.arpa. (44)
18:19:33.954386 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 117, length 64
18:19:33.955436 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 117, length 64
18:19:34.954469 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 118, length 64
18:19:34.956300 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 118, length 64
18:19:35.535640 IP 192.168.1.133.49359 > xxx.pl.domain: 25834+ PTR? 109.1.168.192.in-addr.arpa. (44)
18:19:35.540854 IP xxx.pl.domain > 192.168.1.133.49359: 25834 NXDomain 0/1/0 (115)
18:19:35.954492 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 119, length 64
18:19:35.958736 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 119, length 64
18:19:36.954570 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 120, length 64
18:19:36.957627 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 120, length 64
18:19:37.954587 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 121, length 64
18:19:37.957188 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 121, length 64
18:19:38.954707 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 122, length 64
18:19:38.954731 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 122, length 64
18:19:39.954721 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 123, length 64
18:19:39.958968 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 123, length 64
18:19:40.541158 IP 192.168.1.133.51285 > dns.xxx.pl.domain: 25834+ PTR? 109.1.168.192.in-addr.arpa. (44)
18:19:40.617464 IP dns.xxx.pl.domain > 192.168.1.133.51285: 25834 NXDomain 0/1/0 (115)
18:19:40.954839 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 124, length 64
18:19:40.955927 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 124, length 64
18:19:41.954885 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 125, length 64
18:19:41.956015 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 125, length 64
18:19:42.954885 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 126, length 64
18:19:42.954908 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 126, length 64
18:19:43.954963 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 127, length 64
18:19:43.957784 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 127, length 64
18:19:44.955045 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 128, length 64
18:19:44.958610 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 128, length 64
18:19:45.546565 IP 192.168.1.133.49359 > xxx.pl.domain: 25834+ PTR? 109.1.168.192.in-addr.arpa. (44)
18:19:45.547949 IP xxx.pl.domain > 192.168.1.133.49359: 25834 NXDomain 0/1/0 (115)
18:19:45.955110 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 129, length 64
18:19:45.956237 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 129, length 64
18:19:46.955326 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 130, length 64
18:19:46.961571 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 130, length 64
18:19:47.955220 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 131, length 64
18:19:47.955244 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 131, length 64
18:19:48.955309 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 132, length 64
18:19:48.955332 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 132, length 64
18:19:49.955391 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 133, length 64
18:19:49.963315 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 133, length 64
18:19:50.552030 IP 192.168.1.133.51285 > dns.xxx.pl.domain: 25834+ PTR? 109.1.168.192.in-addr.arpa. (44)
18:19:50.558578 IP dns.xxx.pl.domain > 192.168.1.133.51285: 25834 NXDomain 0/1/0 (115)
18:19:50.955424 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 134, length 64
18:19:50.958131 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 134, length 64
18:19:51.955457 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 135, length 64
18:19:51.956353 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 135, length 64
18:19:52.955532 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 136, length 64
18:19:52.956103 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 136, length 64
18:19:53.955572 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 137, length 64
18:19:53.962819 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 137, length 64
18:19:54.955635 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 138, length 64
18:19:54.965442 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 138, length 64
18:19:55.658235 IP 192.168.1.133.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 109.1.168.192.in-addr.arpa. (44)
18:19:55.955686 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 139, length 64
18:19:55.956405 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 139, length 64
18:19:56.659989 IP 192.168.1.133.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 109.1.168.192.in-addr.arpa. (44)
18:19:56.955766 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 140, length 64
18:19:56.959140 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 140, length 64
18:19:57.955818 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 141, length 64
18:19:57.955832 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 141, length 64
18:19:57.966401 ARP, Request who-has 192.168.1.1 tell 192.168.1.133, length 46
18:19:57.966407 ARP, Reply 192.168.1.1 is-at 44:1e:a1:3d:e3:36 (oui Unknown), length 28
18:19:58.662824 IP 192.168.1.133.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 109.1.168.192.in-addr.arpa. (44)
18:19:58.955878 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 142, length 64
18:19:58.959587 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 142, length 64
18:19:59.955935 IP 192.168.1.133 > 192.168.1.1: ICMP echo request, id 6937, seq 143, length 64
18:19:59.958454 IP 192.168.1.1 > 192.168.1.133: ICMP echo reply, id 6937, seq 143, length 64
18:20:00.560680 IP 192.168.1.133.34705 > xxx.pl.domain: 22360+ PTR? 219.0.168.192.in-addr.arpa. (44)
在此日志中，我们可以看到服务器向客户端发送回复，客户端收到其中一些回复，但 ping 程序没有显示任何回复。当我将客户端 IP 地址从工作地址更改为一个时，它会 ping 网关并且一切正常。我有一半随机地址不起作用，我不知道如何识别它们并找出它们不起作用的原因。