IPPROTO_ESP and vpnc

[matthew sporleder <msporleder%gmail.com@localhost>]

I'm trying to use vpnc and getting the following error:
socket(PF_INET, SOCK_RAW, IPPROTO_ESP): Protocol not supported


I wrote the following test program and get the same thing:

#include <stdio.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <errno.h>
#include <string.h>

int main(int argc, char *argv[])
{
  int sock;
  sock = socket(PF_INET, SOCK_RAW, IPPROTO_ESP);
  if ( sock < 0 )
  {
    perror("sock problem");
  }

}

Is this because my kernel has IPSEC commented out?

Thanks,
Matt