[11426] in bugtraq

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Re: L0pht ICMP Router Discovery Advisory

daemon@ATHENA.MIT.EDU (Laris Benkis)
Thu Aug 19 13:00:19 1999

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Message-Id:  <01BEE959.5E5A7420@333-8th-8c-d-131-laris-benkis.omp.rogers.wave.ca>
Date:         Wed, 18 Aug 1999 09:09:18 -0400
Reply-To: Laris Benkis <laris@OTTAWA.COM>
From: Laris Benkis <laris@OTTAWA.COM>
X-To:         "Paul S. Cosis" <sili@L0PHT.COM>,
              "BUGTRAQ@SECURITYFOCUS.COM" <BUGTRAQ@SECURITYFOCUS.COM>
To: BUGTRAQ@SECURITYFOCUS.COM
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An addendum to the Microsoft IRDP implementation.  Its somewhat broken in that its mapping of IRDP preference to routing metric is not monotonically decreasing ie. high-preference/hi-priority routes are actually treated as low priority routes.  Here are the mappings I found on my win98 machine.

Laris

Preference	Metric
-2,147,483,648	ignored
-2,147,483,647	+2,147,483,647
-10,000	+11,000
-2,000	+3,000
-1,000	+2,000
-1	+1,001
0	+1,000
+1	+999
+1,000	0
+1,001	+4,294,966,296
+2,000	+4,294,966,296
+2,147,483,647	+2,147,483,647	

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