dennz:

change LAN IP

Supply the following if possible:

• Device problem occurs on
  tp-link 1043nd hw ver 2.1 exact current case,
  but 1043, 4300 many hw versions

• Software versions of OpenWrt/LEDE release, packages, etc.
  current, with exact problem:
  BB14.07, 0.12+svn-r10530
  and some another BB, CC about 6 cases on about 10 devices per last 2 years.
  combinations with openvpn, p910nd, statistics, multiwan, etc
  Mainly, I have to reset to defaults and reinstall sw and settings.
  This time I have spare and bit of time to learn this case -
  I've seen suddenly that ovpn tun connected to remote peer
  (so, not a brick) but lan or that router lan ip not reacheble directly or via ovpn)

• Steps to reproduce
  change LAN IP by Luci 10.1.4.254 --> 10.1.9.254, save+apply
  = semi-"brick", LAN missed totally
  (another variants - edit network file, or set new lan ip by cli - the same results)
  (sometimes I've seen that noscript or adblock prevent Luci make something,
  but in this case transaction plan will be already at owrt side completely, imho)

• Recover is possible,
  ok from serial console
  by vi edit 1 symbol in LAN IP at file /etc/config/network lan ip 9-->4
  result - ok, totaly recovered.
  found no more 1 place, where LAN IP stored and changed,
  so, whats wrong during/after change LAN IP?
  My scripts add some routes, but not for default LAN segment,
  for remote via ovpn only, so I sure no errors

Bug is not exact LEDE, but may be inherited from BB-CC,
so imho report should be there.

I'm newbie at LEDE tracker,
so don't know better place for this report, moderate, please.

poor english, sorry!