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Currently interfaces(5) says in KNOWN BUGS/LIMITATIONS:

       Unfortunately it can happen that the kernel assigns different  physical
       interface  names  to the same hardware at different times; for example,
       what was called "eth0" last time you booted is now  called  "eth1"  and
       vice  versa.   This  creates  a  problem  if  you want to configure the
       interfaces appropriately.  A way to deal with this problem  is  to  use
       mapping  scripts  that  choose logical interface names according to the
       properties of  the  interface  hardware.   See  the  get-mac-address.sh
       script  in  the  examples  directory  for  an example of such a mapping
       script.  See also Debian bug #101728.

The modern solution, described in Debian docs [1], is to use edit
/etc/udev/rules.d/70-persistent-net.rules. I suggest we stop talking
about confusing get-mac-address.sh script and instead replace the last
two "See…" sentences with:

       See /etc/udev/rules.d/70-persistent-net.rules for a way to set
interface names persistently.

I realize that Debian docs is linked at the end of this man page. But
it's not clear it will help with consistent names problem, because KNOWN
BUGS says get-mac-address.sh is needed for this. Let's help people new
to all these things! We've all been there :-)

[1]: http://www.debian.org/doc/manuals/debian-reference/ch05.en.html

** Affects: manpages
     Importance: Undecided
         Status: New

** Affects: ifupdown (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bitesize manpage string-fix
-- 
interfaces(5) man page should mention 70-persistent-net.rules for consistent eth* naming
https://bugs.launchpad.net/bugs/1295348
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