On Sat, Oct 14, 2000 at 15:01 +0200, Oliver Hensel wrote:
Hi.
On Fri, 13 Oct 2000, Gerhard Sittig wrote: [snip]
Somebody at MS had the bright idea to say "if we don't have / don't get an address, we simply dice us one." That's when they use the IPs you can see above. Watch the "wide" netmask and the broadcast for "the other unconfigured machines"! Seems MS wants to cope with ignorant environments and even run when not setup correctly ...
Better would be to power the system automatically down?
No, just to not scream out into the net "who else doesn't have a valid config?". It's just that simple: If you don't get one, you don't have one. And without an IP you just dont take part in networking conversations.
Sadly I couldn't find any reference to where those IPs come from. RFC1918 addresses are explicitely reserved at the registrars. Those MS fallbacks seem not to be. [ ... ]
You can find those adresses on whois:
whois -h whois.arin.net "169.254.0.0"
Netname: LINKLOCAL Netblock: 169.254.0.0 - 169.254.255.255
They are specifically reserved for that purpose, but I couldn't find a RFC on it.
But here is a list from my router with relevant denied routes:
[ ... snipped ... ]
This list is of quite an enourmous length. And I already thought my 4 entry list (3x RFC1918 plus multicast) was sufficient ... Anyone out there with a reference as to where they all come from and what they are made for? Anyone with a clue about what's the difference between "private addresses for isolated test environments" and "linklocal addresses for those who don't want to or cannot setup something"? I'm interested. virtually yours 82D1 9B9C 01DC 4FB4 D7B4 61BE 3F49 4F77 72DE DA76 Gerhard Sittig true | mail -s "get gpg key" Gerhard.Sittig@gmx.net -- If you don't understand or are scared by any of the above ask your parents or an adult to help you.