Fwd: [OLPC Networking] Cannot ping one OLPC to another

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eth0      Link encap:Ethernet  HWaddr 00:17:C4:00:CC:89  
          inet addr:192.168.1.101  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::217:c4ff:fe00:cc89/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:36 errors:0 dropped:0 overruns:0 frame:0
          TX packets:135 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:7260 (7.0 KiB)  TX bytes:40445 (39.4 KiB)

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:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
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Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 eth0
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eth0      MRVL-USB8388  ESSID:"LSI - OLPC"  Nickname:""
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:14:BF:F2:E1:80   
          Bit Rate:54 Mb/s   Tx-Power=13 dBm   
          Retry limit:8   RTS thr=2347 B   Fragment thr=2346 B   
          Encryption key:off
          Power Management:off
          Link Quality=100/100  Signal level=-34 dBm  Noise level=-88 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:2481
          Tx excessive retries:24  Invalid misc:384   Missed beacon:0

msh0      MRVL-USB8388  ESSID:"LSI - OLPC"  Nickname:""
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:14:BF:F2:E1:80   
          Bit Rate:54 Mb/s   Tx-Power=13 dBm   
          Retry limit:8   RTS thr=2347 B   Fragment thr=2346 B   
          Encryption key:off
          Power Management:off
          Link Quality=100/100  Signal level=-35 dBm  Noise level=-89 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:2481
          Tx excessive retries:24  Invalid misc:384   Missed beacon:0