*** src/backend/utils/adt/network.c	Sat Jul 17 11:01:02 1999
--- src/backend/utils/adt/network_fixed.c	Sat Jul 17 11:08:29 1999
***************
*** 452,458 ****
  	if (ip_family(ip) == AF_INET)
  	{
  		/* It's an IP V4 address: */
! 		int			addr = htonl((-1 << (32 - ip_bits(ip))) & 0xffffffff);
  
  		if (inet_net_ntop(AF_INET, &addr, 32, tmp, sizeof(tmp)) == NULL)
  			elog(ERROR, "unable to print netmask (%s)", strerror(errno));
--- 452,458 ----
  	if (ip_family(ip) == AF_INET)
  	{
  		/* It's an IP V4 address: */
! 		int			addr = htonl(ip_bits(ip) ? (-1 << (32 - ip_bits(ip))) & 0xffffffff : 0x00000000);
  
  		if (inet_net_ntop(AF_INET, &addr, 32, tmp, sizeof(tmp)) == NULL)
  			elog(ERROR, "unable to print netmask (%s)", strerror(errno));