Shares in DSL.net, a high-speed digital subscriber line provider, gained more than 5 percent to close at $8.06 when the company went public today in an initial stock offering. DSL.net offered 7.2 million shares at $7.50, after decreasing the size and price range for the IPO. DSL.net trades on the Nasdaq stock market under the "DSLN" ticker symbol. Managing underwriters were DB Alex. Brown, Donaldson Lufkin & Jenrette, and Lehman Brothers.