为什么会出现 ping 重复现象，怎么解决。不过在 Windows 虚拟机上进行 ping 操作就没问题，来个大佬帮帮忙看看哪里配置有问题
在虚拟机 Rocky Linux (192.168.137.158) 上进行 ping
Last login: Sun Feb 16 09:30:16 2025 from 192.168.137.1 [microcharon@localhost ~]$ ping bing.com PING bing.com (13.107.21.200) 56(84) 比特的数据。 64 比特，来自 13.107.21.200 (13.107.21.200): icmp_seq=1 ttl=110 时间=36.6 毫秒 64 比特，来自 13.107.21.200 (13.107.21.200): icmp_seq=1 ttl=110 时间=36.6 毫秒 (DUP!) 64 比特，来自 13.107.21.200 (13.107.21.200): icmp_seq=2 ttl=110 时间=36.5 毫秒 64 比特，来自 13.107.21.200 (13.107.21.200): icmp_seq=2 ttl=110 时间=36.5 毫秒 (DUP!) 64 比特，来自 13.107.21.200 (13.107.21.200): icmp_seq=3 ttl=110 时间=36.4 毫秒 64 比特，来自 13.107.21.200 (13.107.21.200): icmp_seq=3 ttl=110 时间=36.4 毫秒 (DUP!) 64 比特，来自 13.107.21.200 (13.107.21.200): icmp_seq=4 ttl=110 时间=36.5 毫秒 64 比特，来自 13.107.21.200 (13.107.21.200): icmp_seq=4 ttl=110 时间=36.5 毫秒 (DUP!) ^C --- bing.com ping 统计 --- 已发送 4 个包， 已接收 4 个包, +4 重复, 0% packet loss, time 3004ms rtt min/avg/max/mdev = 36.445/36.516/36.645/0.076 ms [microcharon@localhost ~]$ cat /etc/resolv.conf # Generated by NetworkManager search mshome.net nameserver 192.168.137.1 [microcharon@localhost ~]$ ip addr show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:15:5d:20:83:16 brd ff:ff:ff:ff:ff:ff inet 192.168.137.158/24 brd 192.168.137.255 scope global dynamic noprefixroute eth0 valid_lft 649695sec preferred_lft 649695sec inet6 fe80::215:5dff:fe20:8316/64 scope link noprefixroute valid_lft forever preferred_lft forever 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:15:5d:20:83:29 brd ff:ff:ff:ff:ff:ff inet 192.168.138.3/24 brd 192.168.138.255 scope global noprefixroute eth1 valid_lft forever preferred_lft forever inet6 fe80::215:5dff:fe20:8329/64 scope link noprefixroute valid_lft forever preferred_lft forever 在 Windows Server 2025 (192.168.137.2) 上进行 ping
PS C:\Users\Administrator> ping bing.com 正在 Ping bing.com [13.107.21.200] 具有 32 字节的数据: 来自 13.107.21.200 的回复: 字节=32 时间=38ms TTL=110 来自 13.107.21.200 的回复: 字节=32 时间=36ms TTL=110 来自 13.107.21.200 的回复: 字节=32 时间=37ms TTL=110 来自 13.107.21.200 的回复: 字节=32 时间=36ms TTL=110 13.107.21.200 的 Ping 统计信息: 数据包: 已发送 = 4 ，已接收 = 4 ，丢失 = 0 (0% 丢失)， 往返行程的估计时间(以毫秒为单位): 最短 = 36ms ，最长 = 38ms ，平均 = 36ms PS C:\Users\Administrator> ipconfig Windows IP 配置 以太网适配器 以太网 4: 连接特定的 DNS 后缀 . . . . . . . : 本地链接 IPv6 地址. . . . . . . . : fe80::ff1f:adde:ba03:6d42%18 IPv4 地址 . . . . . . . . . . . . : 192.168.137.2 子网掩码 . . . . . . . . . . . . : 255.255.255.0 默认网关. . . . . . . . . . . . . : 192.168.137.1 Hyper-V 创建的内部虚拟交换机“Internal Virtual Switch”，其网络适配器 IP 配置
PS C:\Users\Administrator> Get-NetIPAddress -InterfaceAlias "vEthernet (Internal Virtual Switch)" IPAddress : fe80::1d6f:a2ca:16b:bafb%4 InterfaceIndex : 4 InterfaceAlias : vEthernet (Internal Virtual Switch) AddressFamily : IPv6 Type : Unicast PrefixLength : 64 PrefixOrigin : WellKnown SuffixOrigin : Link AddressState : Preferred ValidLifetime : Infinite ([TimeSpan]::MaxValue) PreferredLifetime : Infinite ([TimeSpan]::MaxValue) SkipAsSource : False PolicyStore : ActiveStore IPAddress : 192.168.137.1 InterfaceIndex : 4 InterfaceAlias : vEthernet (Internal Virtual Switch) AddressFamily : IPv4 Type : Unicast PrefixLength : 24 PrefixOrigin : Manual SuffixOrigin : Manual AddressState : Preferred ValidLifetime : Infinite ([TimeSpan]::MaxValue) PreferredLifetime : Infinite ([TimeSpan]::MaxValue) SkipAsSource : False PolicyStore : ActiveStore PS C:\Users\Administrator> Get-VMNetworkAdapter -VMName "Rocky Linux 9" | Select VMName,Name,MacAddress,IPAddresses VMName Name MacAddress IPAddresses ------ ---- ---------- ----------- Rocky Linux 9 网络适配器 00155D208316 {192.168.137.158, fe80::215:5dff:fe20:8316} Rocky Linux 9 网络适配器 00155D208329 {192.168.138.3, fe80::215:5dff:fe20:8329} DHCP 相关配置
PS C:\Users\Administrator> Get-DhcpServerv4Scope ScopeId SubnetMask Name State StartRange EndRange LeaseDuration ------- ---------- ---- ----- ---------- -------- ------------- 192.168.137.0 255.255.255.0 Internal Vi... Active 192.168.137.2 192.168.137.254 8.00:00:00 PS C:\Users\Administrator> Get-DhcpServerv4Lease -ScopeId 192.168.137.0 IPAddress ScopeId ClientId HostName AddressState LeaseExpiryTime --------- ------- -------- -------- ------------ --------------- 192.168.137.2 192.168.137.0 00-15-5d-20-83-09 WIN-LBFVIUCFGHO Active 2025/2/23 23:06:34 192.168.137.3 192.168.137.0 5d-20-83-1d-00-01... Active 2025/2/23 23:06:31 192.168.137.89 192.168.137.0 00-15-5d-20-83-0b Active 2025/2/23 23:06:34 192.168.137.133 192.168.137.0 00-15-5d-20-83-05 debian Active 2025/2/23 23:06:31 192.168.137.158 192.168.137.0 00-15-5d-20-83-16 Active 2025/2/23 23:06:29 192.168.137.167 192.168.137.0 00-15-5d-20-83-0d localhost Active 2025/2/23 23:06:49 192.168.137.227 192.168.137.0 00-15-5d-20-83-0c Active 2025/2/23 23:06:34 PS C:\Users\Administrator> Get-DhcpServerv4OptionValue -ScopeId 192.168.137.0 OptionId Name Type Value VendorClass UserClass PolicyName -------- ---- ---- ----- ----------- --------- ---------- 51 租约 DWord {691200} 3 路由器 IPv4Add... {192.168.137.1} 6 DNS 服务器 IPv4Add... {192.168.137.1} DNS 转发器设置
PS C:\Users\Administrator> Get-DnsServerForwarder UseRootHint : True Timeout(s) : 3 EnableReordering : True IPAddress : {119.29.29.29, 223.5.5.5} ReorderedIPAddress : {119.29.29.29, 223.5.5.5} NAT 网络配置
PS C:\Users\Administrator> Get-NetNat Name : Primary-NAT ExternalIPInterfaceAddressPrefix : InternalIPInterfaceAddressPrefix : 192.168.137.0/24 IcmpQueryTimeout : 30 TcpEstablishedConnectionTimeout : 1800 TcpTransientConnectionTimeout : 120 TcpFilteringBehavior : AddressDependentFiltering UdpFilteringBehavior : AddressDependentFiltering UdpIdleSessionTimeout : 120 UdpInboundRefresh : False Store : Local Active : True  | 1 dbg 236 天前 Linux 的 ping 命令输出中的 (DUP!) ，意思是 duplicate,表示收到了重复的 ICMP 回显应答（ Echo Reply ）包。估计你 Hyper-V 错误地桥接了多个虚拟网卡到同一物理网络。 |
 | 2 ranaanna 236 天前 如果只是这一个 linux 虚拟机存在重复数据包，那么很大的概率是因为该虚拟机的网卡启用了混杂模式。是不是在这个虚拟机上用了某些抓包工具？ |
 | 4 Cola98 236 天前 会不会是因为 mac 地址冲突了？ |
 | 5 Microcharon OP @dbg  ```bash [root@localhost ~]# tcpdump -i any icmp tcpdump: data link type LINUX_SLL2 dropped privs to tcpdump tcpdump: verbose output suppressed, use -v[v]... for full protocol decode listening on any, link-type LINUX_SLL2 (Linux cooked v2), snapshot length 262144 bytes 14:14:58.472873 eth0 Out IP localhost.localdomain > 20.205.243.166: ICMP echo request, id 5, seq 1, length 64 14:14:58.581189 eth0 In IP 20.205.243.166 > localhost.localdomain: ICMP echo reply, id 5, seq 1, length 64 14:14:59.474350 eth0 Out IP localhost.localdomain > 20.205.243.166: ICMP echo request, id 5, seq 2, length 64 14:14:59.582625 eth0 In IP 20.205.243.166 > localhost.localdomain: ICMP echo reply, id 5, seq 2, length 64 14:15:00.475622 eth0 Out IP localhost.localdomain > 20.205.243.166: ICMP echo request, id 5, seq 3, length 64 14:15:00.571066 eth0 In IP 20.205.243.166 > localhost.localdomain: ICMP echo reply, id 5, seq 3, length 64 14:15:01.477195 eth0 Out IP localhost.localdomain > 20.205.243.166: ICMP echo request, id 5, seq 4, length 64 14:15:01.583919 eth0 In IP 20.205.243.166 > localhost.localdomain: ICMP echo reply, id 5, seq 4, length 64 ``` ```bash [microcharon@localhost ~]$ ping github.com PING github.com (20.205.243.166) 56(84) 比特的数据。 64 比特，来自 20.205.243.166 (20.205.243.166): icmp_seq=1 ttl=108 时间=108 毫秒 64 比特，来自 20.205.243.166 (20.205.243.166): icmp_seq=2 ttl=108 时间=108 毫秒 64 比特，来自 20.205.243.166 (20.205.243.166): icmp_seq=3 ttl=108 时间=95.5 毫秒 64 比特，来自 20.205.243.166 (20.205.243.166): icmp_seq=4 ttl=108 时间=107 毫秒 ^C --- github.com ping 统计 --- 已发送 4 个包， 已接收 4 个包, 0% packet loss, time 3004ms rtt min/avg/max/mdev = 95.482/104.727/108.349/5.375 ms ``` 关闭这个 Hyper-V 可扩展的虚拟交换机就好了，这是怎么回事 |
 | 6 bjfane PRO 不知道你的 hyper-v 的网络结构， 我的从宿主看只有一个 vEthernet (NAT) ，虚拟机 windows linux 都有，应该是多个网络？！ |
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