INT 21 - Novell NetWare v4 - CHANGE CONNECTION STATE AX = F217h subfn 1Dh CX = length of request buffer in bytes DX = length of reply buffer in bytes DS:SI -> request buffer (see #02180) ES:DI -> reply buffer Return: AL = status (see #02860 at INT 2F/AX=7A20h/BX=0000h) reply buffer filled