SHARES in Perth-based ISP iiNet jumped almost 9 per cent Thursday following the announcement that the federal government would not relax regulation of Telstra’s network. The stock gained 17 cents a share to close at $1.82. iiNet shares have been hammered by the market since February when they traded as high as $3.62. December has been its real low, slipping below $2 a share and trading as low as $1.62 a share after the company flagged concerns about proposed regulatory changes that could hurt their pricing and distribution model.