On Fri, Jan 06, 2017 at 03:32:01PM +0100, 
hans@hanswkraus.com
          wrote:
          
Hi, 
            
            urgent help needed. After adding an iptable entry for
            masquerading my
            local network and making it permanent with
            the package "iptables-persistent" my Debian server doesn't
            boot any
            more.
            It hangs with the line:
            A start job is running for LSB: Raise network interfaces. (
            ... /no
            limit)
            The root file system where it boots from is on an Adaptec HW
            Raid
            interface, the motherboard is a Asrock. 
            
            I habe tried to boot from a live CD (by pressing F11 as the
            short boot
            msg of the motherboard suggests), but with no avail,
            the boot menue doesn't appear. I don't see the Grub menue,
            the screen is
            momentarily blank.
            The computer insists on booting from the Adaptec. 
            
            Is there any chance to interrupt the booting process? The
            other command
            windows (Alt-F2 .. Alt-F6) show only the line
            A start job is running for LSB: Raise network interfaces. (
            ... /no
            limit)
          
          When you boot normally, do you get a GRUB menu flashing by? If
          so, you can interrupt it there (try down-arrow) and edit the
          boot line to change the init system to init=/bin/sh
          
          Then you can mount your root filesystem r/w 
          mount -o remount,rw /
          and edit your iptables troubles away.
          
          -dsr-