After updating to 10.9.3 on my iMac 21.5 late 2012 trouble with sleep mode(after waking up ethernet connection is lost)

...and i have to wait when ethernet is connect
in network settings error(Ethernet cable is connected, but the computer does not IP-address - "google translate") then self assigned ip(like 169.254 ....) then adapter tekes ip from my router and ethernet is starting working
tested on other imac 21.5 late 2012 10.9.3 same problem after waking up i have to wait a moment

Problem was resolved with a reinstall of ML fromm the Recovery disk. 

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