1 #ifndef IP4_H
2 #define IP4_H
3 
4 extern unsigned int ip4_scan(char *,char *);
5 extern unsigned int ip4_fmt(char *,char *);
6 
7 #define IP4_FMT 20
8 
9 extern const char ip4loopback[4]; /* = {127,0,0,1}; */
10 
11 #endif
12