--- src/sys/sys/socketvar.h	2005/01/26 23:09:58	1.17
+++ src/sys/sys/socketvar.h	2005/03/28 19:53:30	1.18
@@ -93,7 +93,9 @@ struct socket {
 		u_long	sb_mbmax;	/* max chars of mbufs to use */
 		long	sb_lowat;	/* low water mark */
 		struct	mbuf *sb_mb;	/* the mbuf chain */
-		struct	mbuf *sb_lastmbuf; /* last mbuf in sb_mb */
+		struct	mbuf *sb_lastmbuf;	/* last mbuf in sb_mb */
+		struct	mbuf *sb_lastrecord;	/* last record in sb_mb
+						 * valid <=> sb_mb non-NULL */
 		struct	selinfo sb_sel;	/* process selecting read/write */
 		short	sb_flags;	/* flags, see below */
 		short	sb_timeo;	/* timeout for read/write */