[arch-general] starting network:fail[eth0 wasn't connected] How to enable without reboot?

[Joe(theWordy)Philbrook]

It would appear that on May 18, Dan McGee did say:

> Your dhcp process didn't start either, so you need to start one of
> those. Something as simple as `dhcpcd -i eth0` might work.

That makes sense Dan, Thanks! 

While it looks like woldra's suggestion may be the best one, yours
gives me a clue as to why ifconfig didn't do it for me... Thanks
again. You also made me curious, I will likely try the dhcpcd method
at least once to see if it works...

It would appear that on May 18, C Anthony Risinger did say:

> You may need to modprobe the module for your Ethernet card. Try lsmod
> to get it's name.

I'm hoping I don't need that because lsmod produces pages of output,
none of which sounds like an ethernet card to me... But thanks for
pointing out the possibility...


It would appear that on May 18, Rafael Correia did say:

> Man, I don't that's the point, but here I need to do this:
> 
> ifconfig eth0 0.0.0.0

Thanks Rafael, A look at 'man ifconfig' seems to indicate that you are
telling it to set the ip address of the interface to 0.0.0.0 though I
haven't a clue why you need to do that. If all else fails I'll try it.

It would appear that on May 18, woldra at fsfe.org did say:

> ifplugd is your friend .... it detects the calble being plugged in and brings
> the interface up.

Thanks woldra, I never heard of ifplugd before... have to admit, what I
learned with a quick scroogle search on it tells me that it's probably my
best option. Especially if it really only affects the ethernet connection.

But 'man ifplugd' is rather terse. After doing a 'pacman -S ifplugd'
will I need to add it to the daemons list in my rc.conf???

It would appear that on May 18, Kaiting Chen did say:

> Um should he just /etc/rc.d/network restart? That performs everything that
> happens when the network interface is brought up on system start.

Thank you Kaiting. This might even turn out to be necessary, the boot
up screen messages don't specify what "starting the network" failed to
do. So if ifplugd doesn't do it, I'll probably go this route...

It would appear that on May 19, woldra at fsfe.org did say:

> > Um should he just /etc/rc.d/network restart? That performs everything that
> > happens when the network interface is brought up on system start.
> >    
> sure you can do that, but why not let the little tool do that for you?  A
> little automagic doesn't harm as long as you know whats going on;)
> Apart from that ifplugd just controls one interface where the network script
> starts/stops the whole networking (including 127.0.0.1)...

So then I'm guessing that means that if a process is using the local
loopback interface when a "/etc/rc.d/network restart" is issued, then
that process my crash or hang etc... ??? 

It would appear that on May 18, Kaiting Chen did say:

> I see I've never heard of ifplugd but it looks like the best solution. What
> I was referring to was that /etc/rc.d/network restart is preferable to
> ifconfig in that it will start up dhcpcd for you.

Well Kaiting, While woldra's ifplugd suggestion does sound like the best
solution, YOUR suggestion, and that of Dan McGee, seem to explain what I
was missing with my ifconfig idea... Which is what I actualy asked...

I'd like to thank all of you very much for the kind suggestions. This
thread will definitely be copied to my "LinuxClues" folder for future
reference. 

-- 
|   ~^~   ~^~
|   <*>   <*>       Joe (theWordy) Philbrook
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|     \___/         <<jtwdyp at ttlc.net>>