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[ns] Problems compiling ping.cc



Hello everyone!
I'm just trying to do the example of the ping agent in the Marc Greis Tutorial. I have copied the ping.cc and ping.h files from the web page . I have also modified the Makefile, packet.h, ns-defaults.tcl and ns-packet.tcl. When I run "make depend" everything is OK, but when I run "make" it comes up this error:
########
>make depend
c++ -c -g -Wall -DNO_TK -DTCLCL_CLASSINSTVAR  -DNDEBUG -DUSE_SHM -DHAVE_LIBTCLCL1_0B8 -DHAVE_TCLCL_H -DHAVE_LIBOTCL1_0A4 -DHAVE_OTCL_H -DHAVE_LIBTK8_0 -DHAVE_TK_H -DHAVE_LIBTCL8_0 -DHAVE_TCL_H   -DSTDC_HEADERS=1 -DHAVE_STRING_H=1 -DHAVE_TCL_H=1 -DHAVE_LIBTCL8_0=1 -DHAVE_TK_H=1 -DHAVE_LIBTK8_0=1 -DHAVE_OTCL_H=1 -DHAVE_LIBOTCL1_0A4=1 -DHAVE_TCLCL_H=1 -DHAVE_LIBTCLCL1_0B8=1 -DHAVE_GETRUSAGE=1 -DHAVE_SBRK=1 -DHAVE_STRTOQ=1 -I. -I/usr/X11R6/include  -I../tclcl-1.0b8 -I../otcl-1.0a4 -I../tkbox/include -I../tclbox/include -o ping.o ping.cc
ping.cc: In method `void PingAgent::recv(class Packet *, class Handler * = 0)':
ping.cc:93: request for member `addr_' in `hdrip->hdr_ip::src_', which is of non-aggregate type `int'
*** Error code 1
 
Stop.
#########
 
Can anyone told me how can I fix this, please?
 
Thanks a lot...        Abel

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J Abel Mayal de la Torre
/ BT Advanced Communications Technology Centre
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