#include <u.h>#include <ctype.h> /* *  return ndb attribute type of an ip name */char*ipattr(char *name){	char *p;	int dot = 0;	int alpha = 0; 	for(p = name; *p; p++){		if(isdigit(*p))			;		else if(isalpha(*p) || *p == '-')			alpha = 1;		else if(*p == '.')			dot = 1;		else			return "sys";	} 	if(alpha){		if(dot)			return "dom";		else			return "sys";	} 	if(dot)		return "ip";	else		return "sys";}