Prefix <cf><m>ip1</m>/<m>len1</m></cf> matches prefix
pattern <cf><m>ip2</m>/<m>len2</m>{<m>l</m>,<m>h</m>}</cf> if the
first <cf>min(len1, len2)</cf> bits of <cf/ip1/ and <cf/ip2/ are
- identical and <cf>len1 <= ip1 <= len2</cf>. A valid prefix pattern
+ identical and <cf>l <= len1 <= h</cf>. A valid prefix pattern
has to satisfy <cf>low <= high</cf>, but <cf/pxlen/ is not
constrained by <cf/low/ or <cf/high/. Obviously, a prefix matches a
prefix set literal if it matches any prefix pattern in the prefix set