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oh -- BTW -- when I say 'this happens whether radish is on the wired
network or the wifi one', I should be clear and note that when radish is
on one network or the other, the other interface is thoroughly down (the
interface doesn't list itself as "UP" or "RUNNING" in ifconfig).
Justin Mason writes:
> OK, here's an odd networking question. I have three linux hosts...
>> - radish: laptop running Ubuntu Hoary, builtin 802.11a/b with madwifi
> drivers, or wired 100Mbps ethernet, 2.6.10 kernel
> - jalapeno: chunky desktop running old Fedora Core, 100Mbps ethernet,
> 2.4.23 kernel
> - potato: MythTV box running KnoppMyth r5a12 with a USB zd1201 802.11b
> dongle, 2.6.7 kernel (in an old Sun tape drive case! pics here:
> - POS Netgear el-cheapo combined 802.11a/b base station and 4-port
> 10/100Mbps ethernet switch
> - old Linksys 802.11b base station, hooked up to the switch via
> 10Mbps ethernet, for a little extra coverage
>> all are running 2.6.x kernels, where x >= 7.
>> The zd1201 dongle is a bit unreliable -- it regularly stops routing
> packets silently, and has to be plugged out and in again. (this is a pity,
> as NFS from potato would be nice if it was reliable, and I don't want to
> run ethernet cables if it can be avoided. but hey.)
>> Anyway, the main problem is this: frequently, I attempt to connect to
> potato from radish and it appears to be down -- I get ICMP Destination
> Host Unreachable messages from ping. This happens whether radish is on
> the wired network or the wifi one.
>> However, if I ssh over to jalapeno, I can ping and connect to potato no
> problem from there.
>> Anyone got any ideas on what I should check? And where?
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