mbh and mbf is a mbuf handling library.
This library provide a simple interface along the lines of filehandle.

e.g.)
	void
	extract_ip_addr(struct mbuf *m, struct in_addr *src, struct in_addr *dst)
	{
		struct mbf;
		mbf_open(&mbf, m, MBFFLAGS_RDONLY);
		mbf_seek(&mbf, offsetof(struct ip, ip_src), SEEK_SET);
		mbf_read(&mbf, src, sizeof(struct in_addr));
		mbf_read(&mbf, dst, sizeof(struct in_addr));
		mbf_close(&mbf);
	}