NG_PPPOE_STANDARD
if (len == strlen(NG_PPPOE_STANDARD) &&
(strncmp(NG_PPPOE_STANDARD, s, len) == 0)) {
len += strlen(NG_PPPOE_STANDARD) + 1;
len = strlen(NG_PPPOE_STANDARD);
strlcpy(s, NG_PPPOE_STANDARD, len + 1);
mode = p->cfg.nonstandard_pppoe ? NG_PPPOE_NONSTANDARD : NG_PPPOE_STANDARD;