[Bug 207459] ipfw rule using dscp cs4 results in be/cs0

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=207459

smithi at nimnet.asn.au changed:

           What    |Removed                     |Added
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                 CC|                            |smithi at nimnet.asn.au

--- Comment #2 from smithi at nimnet.asn.au ---
Rats, ae@ beat me to it .. i << 32 is of course 0.

But not just sbin/ipfw .. also in /sys/netpfil/ipfw/ip_fw2.c:

            case O_DSCP:
                {
                uint32_t *p;
                uint16_t x;
[..]
                /* DSCP bitmask is stored as low_u32 high_u32 */
                if (x > 32)
                      match = *(p + 1)  & (1 << (x - 32));
                else
                    match = *p & (1 << x);
                }

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