rem: return (char *)inet_ntop(AF_INET6, addrp, buf, sizeof buf);
add: return (char *)inet_ntop(AF_INET6, addrp, buf, sizeof(buf));
context: addr_to_numeric(const struct in6_addr *addrp){	// static char buf[20];	// ADDR tags + sep. + \0	// 0000:0000:0000:0000:0000:0000:0000:000.000.000.000	// (but inet_ntop() supports only 	// 0000:0000:0000:0000:0000:0000:0000:0000 format now.)	static char buf[50+1];	return (char *)inet_ntop(AF_INET6, addrp, buf, sizeof buf);}