apache name mased virtual server

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Hi all,
          i've readed some time ago about the possibilities to use the 
ip-based virtual server solution.Now i use it.
Several different virtaul ip, real ip, on the lvs host and different port on
the real servers so the ip1:80 will be real:80, ip2:80 real:81 and so on.
But i have only a class C, 32 ip.
With the name based soluton i can have hundred of web site on a single ip.
IT is abolutely impossible to make it works with an lvs host and apache
1.3.12????

thanks