---

resolve: Domain name resolution functions

Defines
#define	RESOLVE_OK   0
	No error.
#define	RESOLVE_NOTFOUND   1
	Domain name not found.
#define	RESOLVE_NOADDR   2
	Domain name exists, but has no address.
#define	RESOLVE_NSERROR   3
	Non-recoverable name server error.
#define	RESOLVE_TEMPFAIL   4
	Temporary failure.
Functions
const char *	resolve_ipv4addr (const ipv4addr *addr)
	Look up the domain name corresponding to an IPv4 address.
int	resolve_ipv4name (const char *name, ipv4addr *addr)
	Look up the IPv4 address corresponding to a domain name.
int	resolve_error (void)
	Look up the last resolve error code.

---