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ajobbins

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  #708789 29-Oct-2012 22:44
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Just managed to ping my Android phone (on Wifi) from the Pi. Only thing other than the router that works.

I can ping my IP phone from a windows host, but not from the Pi.




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ajobbins

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  #708790 29-Oct-2012 22:45
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mjb: Hmm, that's curious. I'd look at your switch. got another to swap out temporarily?


Tried that yesterday. Didn't work.




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mjb

mjb
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  #708792 29-Oct-2012 22:47
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ajobbins: can ping my IP phone from a windows host, but not from the Pi.


a windows host, or the (problematic) windows host? Really does sounds like arp poisoning.

edit: does `arp -a` list the MAC addresses of the hosts you're trying to ping? are they correct?




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ajobbins

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  #708798 29-Oct-2012 23:02
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mjb:

a windows host, or the (problematic) windows host? Really does sounds like arp poisoning.

edit: does `arp -a` list the MAC addresses of the hosts you're trying to ping? are they correct?


Adam-PC (192.168.1.21) at 90:a4:de:2f:00:38 [ether] on eth0   CANT PING
SFDDWRT1 (192.168.1.1) at b0:48:7a:c9:b3:cb [ether] on eth0   CAN PING
Media1 (192.168.1.50) at <incomplete> on eth0                        CANT PING
? (192.168.1.102) at 5c:0a:5b:30:45:cd [ether] on eth0             CAN PING
S685-IP (192.168.1.20) at <incomplete> on eth0                       CANT PING

Media1 is the Windows host that is showing the same symptoms as the Pi. I hadn't tried it as the source directly until today as it is a pain to log into.

So Media1 gets the same results as the Pi above.




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gstarkey
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  #708802 29-Oct-2012 23:05
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If 192.168.1.50 can ping 192.168.1.70 (and get an echo reply)
But 192.168.1.70 does not get a echo reply when pinging  192.168.1.50. This is very odd (but not unknown). 
192.168.1.70 can send to 192.168.1.50, it did it with echo reply. So arp works etc.



ajobbins

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  #708809 29-Oct-2012 23:28
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Ok I've fixed it!

Looks like it was a dodgy DD-WRT firmware that was isolating each of the devices plugged into the switch from each other. Flashed a new version and it's now working as expected.

Not sure why it didn't work with the Belkin router I tried yesterday. I didn't do a huge amount of testing with it tho, so I probably over looked something simple there.

THANK JEBUS




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