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ping.cc

hi ns users,

i ran into a problem getting tcl/greis/ping.cc to compile.  the
problem occurs on line 93 of the source in the current snapshot:

sprintf( out, "%s recv %d %3.1f", name(),
              hdrip->src_ >> Address::instance().NodeShift_[1],
              (Scheduler::instance().clock()-hdr->send_time) * 1000);

the change to get the file to compile (and run successfully) was:

sprintf( out, "%s recv %d %3.1f", name(),
              hdrip->src_.addr_ >> Address::instance().NodeShift_[1],
              (Scheduler::instance().clock()-hdr->send_time) * 1000);

note: hdrip->src_ needs to be hdrip->src_.addr_

hope this helps anyone trying to get the ping tutorial up and running.
perhaps we can get someone managing the codebase to update this
file (tcl/greis/ping.cc) and the code found on the tutorial web page
at http://www-mash.cs.berkeley.edu/ns/tutorial/index.html.

cheers,

james