Save IP Addresses

• Problem 1.0: One IP address per web server
  • GET /a/b/c.html
  • Often: Many web servers on one machine
  • Machine must have many IP addresses
  • IP4 address space already running out
• Solution 1.1: Split off machine name
  • GET /a/b.c.html Host:www.inria.fr
  • Allows many web servers using one IP address