The description for the value in option "-m dscp -dscp" should be
modified to 0~63.
The option can match 6 bit DSCP field within the TOS field in the IP
header. So the range for the option should be 0~(26-1) that is 0~63.
IP header. DSCP has superseded TOS within the IETF.
.TP
.BI "--dscp " "value"
-Match against a numeric (decimal or hex) value [0-32].
+Match against a numeric (decimal or hex) value [0-63].
.TP
.BI "--dscp-class " "\fIDiffServ Class\fP"
Match the DiffServ class. This value may be any of the