On 03/03/10 12:12, Garrett D'Amore wrote: > On 03/ 2/10 03:18 PM, Sebastien Roy wrote: >> >> >> 1.7 non-contiguous netmask support removed >> ------------------------------------------ >> >> Non-contiguous netmasks are a relic of yesteryear architectures for >> which we still retain support in the kernel today, and which create >> more complications than they solve. Very few customers use these >> today, and when used, they only create confusion. >> >> This is a hindrance for this project, which strives for an API where >> addresses are input and displayed in the "address/prefixlen" CIDR >> format. Thus, even if ipadm itself will not allow non-contiguous >> netmasks, if ifconfig is used to add non-contiguous netmask, ipadm >> would be forced to either lie about the mask or otherwise mangle its >> output format to display it. >> >> Therefore, this project will be adding checks in the kernel to prevent >> such netmasks from being created. >> > > What is a non-contiguous netmask? Is this a mask where there are 0 bits > between 1 bits, e.g. 255.0.255.0?
That is correct. > (That would be an incredibly > dangerous, and probably not useful, kind of setting.) Yes and that is why we want to prevent such setting going forward thanks ~Girish
