** Synlait Milk SML.NZ falls as much as 2.1% to NZ$0.475; marks biggest intraday pct loss since February 24
** Dairy producer posts HY net loss after tax of NZ$80.6 mln (~$47 mln) vs year-ago profit of NZ$4.8 mln
** Flags manufacturing challenges in New Zealand's Dunsandel facility
** However, logs HY revenue of NZ$949 mln, up from NZ$916.8 mln a year ago
** Withdraws guidance for remainder of FY
** YTD, SML down 25%
($1 = NZ$1.7161)
(Reporting by Aamir Sheik Khalid in Bengaluru)
((Aamir.SheikKhalid@thomsonreuters.com))