Zmegolaz a7f42361ae Fix: Better sanity check of hostname when adding device. (#7582)
* Better sanity check of hostname when adding device.

* Style fix.

* clean() before hostname validity check. IP::isValid to support IPv6 addresses.

* Even more checks to catch invalid input.

* Long if-else, better error message.

* Code re-arranging
2017-11-01 11:06:39 -05:00
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