if (memcmp(o + 2, &addr, sizeof(addr)))
{
q = ppp_conf_nak(s, b, sizeof(b), PPPIPCP, &response, q, p, o, (uint8_t *) &addr, sizeof(addr));
if (memcmp(o + 2, &addr, sizeof(addr)))
{
q = ppp_conf_nak(s, b, sizeof(b), PPPIPCP, &response, q, p, o, (uint8_t *) &addr, sizeof(addr));