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RFC 1071, "Computing the Internet checksum", September 1988

Source of RFC: Legacy
Area Assignment: int
See Also: RFC 1071 w/ inline errata

Errata ID: 560
Status: Verified
Type: Editorial
Publication Format(s) : TEXT
Reported By: Tim Moors
Date Reported: 2004-04-05

Section 4.1 says: 

        while( count > 1 )  {
           /*  This is the inner loop */
               sum += * (unsigned short) addr++;
               count -= 2;

It should say:

        while( count > 1 )  {
           /*  This is the inner loop */
               sum += * (unsigned short *) addr++;
               count -= 2;

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