# File lib/uuid.rb, line 208
208:   def pseudo_mac_address
209:     sha1 = ::Digest::SHA1.new
210:     256.times do
211:       r = [rand(0x100000000)].pack "N"
212:       sha1.update r
213:     end
214:     str = sha1.digest
215:     r = rand 14 # 20-6
216:     node = str[r, 6] || str
217:     if RUBY_VERSION >= "1.9.0"
218:       nnode = node.bytes.to_a
219:       nnode[0] |= 0x01
220:       node = ''
221:       nnode.each { |s| node << s.chr }
222:     else
223:       node[0] |= 0x01 # multicast bit
224:     end
225:     node.bytes.collect{|b|b.to_s(16)}.join.hex & 0x7FFFFFFFFFFF
226:   end