** Shares of packaging company International Paper IP.N drop about 7% at $41.30; secondary-listed London shares down 12.9% at 3,010 p
** Co swings to a quarterly loss after recording $1 billion in impairment charges on its divested cellulose fibers business
** Posts Q3 net loss of $1.10 billion, or $2.09 per share, compared to earnings of $150 million, or 43 cents per share, a year earlier
** Reports quarterly net sales of $6.22 billion compared to analysts' estimate of $6.50 billion - data compiled by LSEG
** As of last close stock down by 17.82%, YTD
(Reporting by Koyena Das in Bengaluru)
((koyena.das@thomsonreuters.com))