iproute2/etc/iproute2/rt_dsfield
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   1# Differentiated field values
   2# These include the DSCP and unused bits
   30x0     default
   4# Newer RFC2597 values
   50x28    AF11
   60x30    AF12
   70x38    AF13
   80x48    AF21
   90x50    AF22
  100x58    AF23
  110x68    AF31
  120x70    AF32
  130x78    AF33
  140x88    AF41
  150x90    AF42
  160x98    AF43
  17# Older values RFC2474
  180x20    CS1
  190x40    CS2
  200x60    CS3
  210x80    CS4
  220xA0    CS5
  230xC0    CS6
  240xE0    CS7
  25# RFC 2598
  260xB8    EF
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