PR#44929.
The main changes are to sc_tracediff, a program that displays traceroutes side
by side that have changed. There are bug fixes to sc_tracediff, as well as
enhancements.
patch provided by Matthew Luckie via PR#44919.
A lot of changed in scamper since 2008.
For some idea about what is in scamper today, please check the website,
in particular the scamper man page.
and IPv6 addresses in parallel to fill a specified packets-per-second rate.
scamper can do ICMP based Path MTU discovery. scamper starts with the
outgoing interface's MTU and discovers the location of PMTU bottlenecks.
Recent revision of scamper do a PMTU search when an ICMP fragmentation
required message is not returned to establish the PMTU to the next point
in the network, followed by a TTL limited search to infer the hop
where failure appears to occur.
Reviewed by Johnny Lam.
