Netgear WGR614 LAN IP subnet changes from 192.168.1.0/24 to 10.0.0.0/24

Discussion in 'Network Routers' started by Jim Garrison, Mar 2, 2009.

  1. Jim Garrison

    Jim Garrison Guest

    I've been recommending NetGear to clients until I discovered a huge
    problem that Netgear considers a "Feature".

    Netgear SOHO wireless routers (in my case WGR614v7) default to LAN IPs
    in the 192.168.1.0/24 netblock. If, however, they detect a packet with
    a source IP in this range on the WAN side, they silently and
    unilaterally switch the LAN side to 10.0.0.1/24. The reasoning is that
    detecting 192.168.1.x on the WAN side means the router WAN port has been
    hooked up to such a network, and therefore this subnet cannot be used on
    the LAN side. They forgot the possibility that brain-dead DSL providers
    might not know enough to configure their modems to filter out such
    invalid packets. While this might (barely) make sense for an all-DHCP
    home setup, it is incompatible with a SOHO setup where one or more
    LAN-attached systems require static IPs. One rogue 192.168.1.x packet
    comes in the WAN port and all statically configured systems lose
    connectivity. The worst part is that this is not documented anywhere,
    and cannot be disabled.

    Is this something that all SOHO router manufacturers do? If I tell my
    client to buy a different brand, how do I ensure that the same thing
    won't happen?
     
    Jim Garrison, Mar 2, 2009
    #1
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