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I'm having a weird issue. On one of a mac, I noticed it was having some weird issues communicating with the server. I pinged the server, 2.0.5.90, from the terminal on the mac, and here are the responses I am seeing.

64 bytes from 10.0.5.90: icmp_seq=0 ttl=64 time=0.457 ms
64 bytes from 10.0.5.125: icmp_seq=0 ttl=255 time=4.753 ms (DUP!)
64 bytes from 10.0.5.90: icmp_seq=1 ttl=64 time=0.459 ms
64 bytes from 10.0.5.125: icmp_seq=1 ttl=255 time=4.716 ms (DUP!)
64 bytes from 10.0.5.90: icmp_seq=2 ttl=64 time=0.288 ms
64 bytes from 10.0.5.125: icmp_seq=2 ttl=255 time=4.742 ms (DUP!)

Why would two devices be responding to these pings?

Brett G
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1 Answers1

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are you sure it's two devices, try arp -a command to list your arp table and see if both ip address are mapped to same mac address in it.

If you're sure they are different devices with different MAC addresses you can try and delete the arp table with arp -d -a or just one or both addresses with arp -d x.x.x.x an let them repopulate again.

Notice: I could be wrong with the syntax off arp command on macos, it's been a while since I did anything on it.

ralz
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  • I did try arp -d * earlier and I was still seeing the same – Brett G Oct 03 '12 at 18:53
  • what is the ip and subnet mask on the client you're pinging from. Also are you on wireless or on cable, can you try connecting that client to some other switch – ralz Oct 03 '12 at 19:32