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    SubjectRe: Is netmask 255.255.255.254 illigal?
    Date
    On Sat, 11 Jan 1997 22:46:39 -0500 (EST), 
    Eugene Kanter <eugene@saturn.net> wrote:
    >kernel 2.1.20
    >
    >ifconfig eth0 206.42.0.97 netmask 255.255.255.254 broadcast 206.42.0.255
    >SIOCSIFNETMASK: Invalid argument
    >
    >What is wrong?
    >
    >Did I do something not right or it is kernel bug?

    netmask 255.255.255.254 only leaves 1 bit host addresses. Since you
    must have a network (all bits 0) and a broadcast address (all bits 1),
    this leaves no room for hosts. 2.1.20 checks and rejects this. If you
    really mean a broadcast address of 206.42.0.255 then your netmask
    should be 255.255.255.0.



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