Hi, On Thu, 5 Oct 2006 18:53:55 -0500 "Boyd Stephen Smith Jr." <[EMAIL PROTECTED]> wrote:
> On Thursday 05 October 2006 14:44, Hans-Werner Hilse <[EMAIL PROTECTED]> > wrote about 'Re: [gentoo-user] OT - ipkungfu not': > > [...] > > Note that the first 29 bits are all equal. > > In addition, the first 30 bits are all equal. Yeah, stupid me :-) Shouldn't count to much bits when I ought to be asleep. > > So it would be sufficient to > > specify a /29 netmask (255.255.255.248). > > However, we can't specify a /30 because two addresses in each block > (the highest and the lowest) are reserved for "network" (anycast) > and "broadcast" (multicast). While this is correct when going for the standard common implementation, linux will happily accept a broadcast address _outside_ of the specified network (beware of routing issues). And anycast is mainly a routing issue and AFAIK not even implemented in linux. Linux will therefore happily accept an IP with all non network bits unset. I don't recommend both in any way, cause different IP stacks may have different opinions on that. That's why I wrote it is likely to break routing and broadcasting. -hwh -- gentoo-user@gentoo.org mailing list
