eui64_aton
if (eui64_aton(cur, e) == 0)
ATF_REQUIRE_MSG(eui64_aton(str, &e) == 0, "eui64_aton failed");
int eui64_aton(const char *, struct eui64 *);
eui64_aton(optarg, &target) != 0)
if (eui64_hostton(nodestr, &eui) != 0 && eui64_aton(nodestr, &eui) != 0)
eui64_aton(optarg, &target) != 0)