SCN               286 drivers/net/wan/hdlc_ppp.c 	{  STA|0  ,IRC|SCR|SCN|3,  2  ,  SCN|3  ,SCN|4,  SCN|3  ,SCR|SCN|3}, /* RCR- */
SCN               334 drivers/net/wan/hdlc_ppp.c 	if (action & SCN)	/* send Configure-Nak/Reject */