gistfile1.rbx

# 
# get current IP addr.
# reject internal netwok(eg. vmnet0, for VMware) at the end of method chain.
# is there better way?
# 

Socket.getaddrinfo(Socket.gethostname, 0, Socket::AF_INET).
  map{|e| e[2] }.
  uniq.
  reject{|addr| addr =~ /\.1\Z/ }