#1866: Pointless warning when running "ifdown" for a manually-configured 
interface
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 Reporter:  [EMAIL PROTECTED]  |        Owner:  [email protected]
     Type:  task                            |       Status:  new                
          
 Priority:  lowest                          |    Milestone:  6.3                
          
Component:  Book                            |      Version:  SVN                
          
 Severity:  normal                          |   Resolution:                     
          
 Keywords:                                  |  
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Comment (by [EMAIL PROTECTED]):

 For bringing down interfaces, rather than looking at the configuration
 files, how about the following:

 {{{
 #get a list of available interfaces
 interfaces=`ip link show | grep ^[[:digit:]].*,UP | cut -f2 -d:`
 #bring each interface down
 for iface in interfaces; do
   ip link set $iface down;
 done;
 }}}

 I'm not quite sure how to handle bringing interfaces up automatically
 though.  Maybe it's just a case of doing the following for each interface
 that `ip link show` reports:

 1) If the interface is blacklisted (I haven't thought of any possible
 configuration interfaces for this yet), i.e. the user explicitly doesn't
 want it to be brought up, don't do anything
 2) If the interface isn't blacklisted and has an /etc/sysconfig/network-
 devices/ifconfig.${iface} file, bring it up
 3) If the interface isn't blacklisted and doesn't have an /etc/sysconfig
 /network-devices/ifconfig.${iface} file fallback to a system-wide default
 configuration, such as DHCP.

-- 
Ticket URL: <http://wiki.linuxfromscratch.org/lfs/ticket/1866#comment:6>
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