Can't ping Ubuntu laptop from my LAN

Posted by oskar on Ask Ubuntu See other posts from Ask Ubuntu or by oskar
Published on 2011-05-20T14:28:59Z Indexed on 2011/06/28 0:30 UTC
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networking

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network

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ping

My laptop has Ubuntu 10.10 and is connected to my router with full internet access, yet I can't ping it from other computers on my LAN. I tried the following:

I can successfully ping those other computers from my Ubuntu laptop, so I didn't accidentally connect to someone else's network.
I can successfully ping my Ubuntu laptop from itself, though I don't know if that means anything.
I haven't messed with iptables at all, so it currently doesn't have any rules set that would cause it to reject anything.
I made a DHCP reservation for my laptop's MAC address in my router to make sure I was always using the correct IP address.

Please note that I am using a "command line only" install of Ubuntu, so I can't use any GUI network config tools. The reason I want to ping it is because I am trying to run an NFS server on the laptop, yet despite correctly setting it up I cannot access the NFS volume on another computer because it isn't even visible on the network right now.

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