[SATLUG] ifconfig commands
geoff at w5omr.shacknet.nu
Fri Apr 18 01:12:47 CDT 2008
Here's a headscratcher (for me, anyway)
yesterday, sometime between 2am and 6:30am, TW/RR issued a new ip
address. Took a while to figure out what was happening... all kinds of
bad scenarios were going through my mind... cable modem gone bad... nic
bit the dust, 10/100 switch finally crapped out after 7 years... etc...
so, I unplugged the cable modem from eth0 on the openSuSE 10.3 server,
and plugged it into the slaptop, running winders. Bam! had
ok - not the cable modem, but that don't clear eth0 or the switch...
got to dinking on the command line....
resulted in the same ip I've had for better'n 8 months...
I thought 'well, let's release and renew and see what happens'.
Unplugged the cable modem again and plugged it back in. Ran
'ifconfig eth0 down'
and immediately had a different ip address *and* internet connection.
Uhm... 'ifconfig eth0 down' I understand doesn't unload the module or
unconfigure it, just places the the interface called eth0 in a downed
but... (and here's where I'm scratching my head) if I ran 'ifconfig eth0
down' and then did 'ifconfig eth0' and had a different ip address, and
connectivity with the outside world, why didn't I have to 'ifconfig eth0
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