Hyper-V Linux 虚拟机 ping DUP 重复现象

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This topic created in 443 days ago, the information mentioned may be changed or developed.

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

ping

重复

配置

6 replies • 2025-02-16 17:22:18 +08:00

dbg

Feb 16, 2025

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。

ranaanna

Feb 16, 2025

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？

ranaanna

Feb 16, 2025

续上，没有仔细看，网卡没有启用 promiscuous mode 。同意 @dbg #1

Cola98

Feb 16, 2025

会不会是因为 mac 地址冲突了？

Microcharon

Feb 16, 2025

@dbg ![image]( https://i.111666.best/image/hzKLeLA9PxPoCiSZpkhN55.png)

```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

bjfane

PRO

Feb 16, 2025

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？！