Fixed bugs in sync.py that were disabling Interface update logic.
Fixed bugs in sync.py that were disabling Interface update logic.

jheretic/operator,critzo/operator,stephen-soltesz/operator,salarcon215/operator,m-lab/operator,m-lab/operator,nkinkade/operator,salarcon215/operator,jheretic/operator,critzo/operator,nkinkade/operator,stephen-soltesz/operator