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For some time during ping 192.168.0.2 I have something like this (DUP!) something is wrong with my network card or switch?

Image

Ubuntu server 15 - *192.168.0.222* Windows server 2012 - *192.168.0.2* - Virtual machine

64 bytes from 192.168.0.2: icmp_seq=3 ttl=128 time=0.369 ms (DUP!)
64 bytes from 192.168.0.2: icmp_seq=4 ttl=128 time=0.203 ms
64 bytes from 192.168.0.2: icmp_seq=4 ttl=128 time=0.280 ms (DUP!)
64 bytes from 192.168.0.2: icmp_seq=5 ttl=128 time=0.343 ms
64 bytes from 192.168.0.2: icmp_seq=5 ttl=128 time=0.443 ms (DUP!)
64 bytes from 192.168.0.2: icmp_seq=6 ttl=128 time=0.306 ms
64 bytes from 192.168.0.2: icmp_seq=6 ttl=128 time=0.393 ms (DUP!)
64 bytes from 192.168.0.2: icmp_seq=7 ttl=128 time=0.283 ms
64 bytes from 192.168.0.2: icmp_seq=7 ttl=128 time=0.380 ms (DUP!)

wlodek@ubuntu:/etc/network$ cat interfaces
auto lo
iface lo inet loopback

auto eth0 
iface eth0 inet manual
bond-master bond0 

auto eth1
iface eth1 inet manual
bond-master bond0


    #Interface
    auto bond0

    iface bond0 inet static
        address 192.168.0.222
        netmask 255.255.255.0
        gateway 192.168.0.100
        dns-nameserver 8.8.8.8

    bond-mode 6
    bond-miimon 100
    bond-slaves none

ping from 192.168.0.79(Ubuntu server 15 (Samba)) to 192.168.0.2 Windows serevr 2012 no DUP!

192.168.0.79

wlodek@Samba:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1a:4d:25:11:c7  
          inet addr:192.168.0.79  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::21a:4dff:fe25:11c7/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4303692 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2829493 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:6299362962 (6.2 GB)  TX bytes:502897264 (502.8 MB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:12773 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12773 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1200613 (1.2 MB)  TX bytes:1200613 (1.2 MB)

64 bytes from 192.168.0.2: icmp_seq=1 ttl=128 time=0.589 ms
64 bytes from 192.168.0.2: icmp_seq=2 ttl=128 time=0.346 ms
64 bytes from 192.168.0.2: icmp_seq=3 ttl=128 time=0.376 ms
64 bytes from 192.168.0.2: icmp_seq=4 ttl=128 time=0.319 ms
64 bytes from 192.168.0.2: icmp_seq=5 ttl=128 time=0.392 ms
64 bytes from 192.168.0.2: icmp_seq=6 ttl=128 time=0.379 ms
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  • 1
    You have two machines answering to your request. Do you have the same error if you ping another IP ?
    – Dom
    Jan 18 '16 at 12:40
  • only if I ping 192.168.0.2 from Ubunto server to Windows server 2012 - I forgot to add this. Ubuntu serevr is 192.168.0.222, Windows server is 192.168.0.2 - Virtual machine Jan 18 '16 at 12:44
  • Can you check "Routing and Remote Access" and "Internet connection Sharing on the Windows" - it has been reported that when enabled on a virtual server duplicate ping replies might occur? Also you can try capturing the traffic with tcpdump or wireshark to check where the duplicate ping replies comes from. Jan 19 '16 at 15:39

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