Re: [cobalt-developers] IP conflicts

[Chris Johnson <cjohnson@xxxxxxxxxxxxx>]

    This is the typical behavior you will see when two
    machines are configured with the same IP address.
    The intermittent effects are because the ARP entries
    for the two systems are pushing each other out of
    your local cache.

    The result is that you connect to one system, work
    for a while, then get an ARP update that points to
    the other system. The TCP connection then tries to
    continue, but the packets are routed to the other
    system.  That system is unaware of the TCP connection
    so it sends a TCP reset, which closes the connection.

    The fix is to change the IP address on one of the
    boxes.

    You should be able to do this from the LCD front panel
    of the Raq-2. Push the select button, then set the host
    address just like when you initially set the system.

    Another choice is that you can use the arp command to
    lock an ARP entry in place.  This will let you connect
    to the Raq-2 through the admin interface so that you
    set the IP address from our normal user interface.
    See the 'arp -s' on the arp man page.  If this seems
    at all obscure, it is probably best to just use the
    LCD  front panel.

    After you set the IP address, the box should reboot.
    If you use the arp trick, be sure to nuke the entry 
    you set, using the 'arp -d' command.

    cj*