PPP_AUTH_CHAP
challp = ppp_packetbuf(_this->ppp, PPP_AUTH_CHAP);
case PPP_AUTH_CHAP:
PUTSHORT(PPP_AUTH_CHAP, ucp);
PUTSHORT(PPP_AUTH_CHAP, ucp);
PUTSHORT(PPP_AUTH_CHAP, ucp);
case PPP_AUTH_CHAP:
case PPP_AUTH_CHAP:
case PPP_AUTH_CHAP: