diff -c ns-2.1b7a.org/Makefile.in ns-2.1b7a/Makefile.in
*** ns-2.1b7a.org/Makefile.in	Thu Oct 19 05:10:22 2000
--- ns-2.1b7a/Makefile.in	Wed Jun  6 10:39:41 2001
***************
*** 54,60 ****
  LDFLAGS	= $(STATIC)
  LDOUT	= -o $(BLANK)
  
! DEFINE	= -DTCP_DELAY_BIND_ALL -DNO_TK @V_DEFINE@ @V_DEFINES@ @DEFS@
  
  INCLUDES = \
  	-I. @V_INCLUDE_X11@ \
--- 54,60 ----
  LDFLAGS	= $(STATIC)
  LDOUT	= -o $(BLANK)
  
! DEFINE	= -DTCP_DELAY_BIND_ALL -DNO_TK @V_DEFINE@ @V_DEFINES@ @DEFS@ -DSHOW_SACKBLK
  
  INCLUDES = \
  	-I. @V_INCLUDE_X11@ \
diff -c ns-2.1b7a.org/trace.cc ns-2.1b7a/trace.cc
*** ns-2.1b7a.org/trace.cc	Fri Sep  1 12:04:08 2000
--- ns-2.1b7a/trace.cc	Wed Jun  6 10:40:16 2001
***************
*** 250,257 ****
  			th->uid() /* was p->uid_ */);
  	} else {
  		sprintf(wrk_, 
! 			"%c "TIME_FORMAT" %d %d %s %d %s %d %s.%s %s.%s %d %d %d 0x%x %d %d",
! 			tt,
  			round(Scheduler::instance().clock()),
  			s,
  			d,
--- 250,260 ----
  			th->uid() /* was p->uid_ */);
  	} else {
  		sprintf(wrk_, 
! 			"%c "TIME_FORMAT" %d %d %s %d %s %d %s.%s %s.%s %d %d %d 0x%x %d %d"
! #ifdef SHOW_SACKBLK
! 			" %d %d %d %d %d %d"
! #endif
! 			,tt,
  			round(Scheduler::instance().clock()),
  			s,
  			d,
***************
*** 272,278 ****
  			tcph->ackno(),
  			tcph->flags(),
  			tcph->hlen(),
! 			tcph->sa_length());
  	}
  	if (namChan_ != 0)
  		sprintf(nwrk_, 
--- 275,290 ----
  			tcph->ackno(),
  			tcph->flags(),
  			tcph->hlen(),
! 			tcph->sa_length()
! #ifdef SHOW_SACKBLK
! 			,tcph->sa_left(0),
! 			tcph->sa_right(0),
! 			tcph->sa_left(1),
! 			tcph->sa_right(1),
! 			tcph->sa_left(2),
! 			tcph->sa_right(2)
! #endif
! 			);
  	}
  	if (namChan_ != 0)
  		sprintf(nwrk_,