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ChangeLog.md

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ChangeLog

All notable changes to the project are documented in this file.

v2.1 - 2026-01-04

Changes

  • Add -b BYTES option to increase (empty) payload size

Fixes

  • If IPv4/IPv6 address type is not specified and cannot be inferred from an interface, skip it
  • Fix htonl on 64-bit values, found and fixed by Marek Küthe

v2.0 - 2022-05-12

Changes

  • Add IPv6 support, still ASM
  • Detect address family from command line group argument, or -6

v1.6 - 2021-10-31

Changes

  • Add Dockerfile with build + deploy to ghcr.io
  • Use clock_gettime() to reliably measure time instead of unreliable gettimeofday(), which only gives the (auto-)adjustable wall clock
  • Improved error messages from init_socket(), e.g. inform the user if they are trying to use an interface without MULTICAST flag set
  • Replace etime= and atime= with ping-like time=. This change is actually a follow-up to v1.3 where the random delay in the receiver was dropped
  • The mping VERSION define is now extracted from the sources rather than defined in the Makefile. This facilitates easier import in other project's build systems and ensures the version is not lost

v1.5 - 2021-09-05

Changes

  • Update README, tips and usage section
  • Add -w DEADLINE, like regular ping(1) tool, this adds the ping(1) behavior to the -c COUNT option, instead of exit after COUNT sent mpings, we now wait DEADLINE seconds to receive COUNT mpings

Fixes

  • Don't exit with error if receiving more than COUNT packets

v1.4 - 2021-08-31

Changes

  • Add man page to section 1
  • Add missing license heading to source file

Fixes

  • Fix missing newline and options in usage text

v1.3 - 2021-08-30

Changes

  • Reindent to Linux KNF
  • Simplfy command line args
  • Add -c COUNT to stop after COUNT packet instead of hardcoded 5
  • Add -W SEC for sender timeout
  • Add -q for quiet output
  • Change -v to -d for debug output
  • Change -V to -v to show version information
  • Drop random delay in receiver mode, not useful in production
  • Add basic test case

Fixes

  • Interface address and default interface lookup
  • Fix formatting of messages to align between sender and receiver
  • Exit with error code if we receive fewer packets than expected
  • Set IP header TTL value to allow for traversing routers

v1.2 - 2014-06-20

Initial version, available from the toolbox repo.