Werk #3223: Fixed exception in network scan when hosts can not be resolved

Component	Setup
Title	Fixed exception in network scan when hosts can not be resolved
Date	Feb 17, 2016
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.4.0i1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.8b2 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

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