getting path MTU

Hello,
Is there a good utility for getting path MTU along a route to some
destination on the web?

I found traceroute.pmtu.c from stevens book in :
http://www.cs.clemson.edu/~westall/826/tcpipi/traceroute/traceroute.pmtu.c


I had to change it a bit and recompile it because there were
compilation errors; also I had to add entries to the mtu array becuase
it seems outdated.

Still when I run it I am not sure about that the result is correct
because there
were occasions when I got strange results.

So - is there a good utility for getting path MTU along a route on
linux ?

Regards,
Ian

.