anchor.diff:              {skip,{ipv6_not_supported,IFs}}
       end.
   
  -%% These version numbers are the highest noted in daily tests
  -%% where the test fails for a plausible reason, so
  -%% skip on that platform.
  +%% These version numbers are above the highest noted
  +%% in daily tests where the test fails for a plausible reason,
  +%% so skip on platforms of lower version, i.e they are future
  +%% versions where it is possible that it might not fail.
   %%
  -%% On newer versions it might be fixed, but we'll see about that
  -%% when machines with newer versions gets installed...
  -%% If the test still fails for a plausible reason these
  +%% When machines with newer versions gets installed,
  +%% if the test still fails for a plausible reason these
   %% version numbers simply should be increased.
   %% Or maybe we should change to only test on known good
   %% platforms - change {unix,_} to false?
   
   %% pktoptions is not supported for IPv4
   recvtos_ok({unix,openbsd}, OSVer) -> not semver_lt(OSVer, {6,4,0});
  -recvtos_ok({unix,darwin}, OSVer) -> not semver_lt(OSVer, {17,6,0});
  +recvtos_ok({unix,darwin}, OSVer) -> not semver_lt(OSVer, {19,0,0});
   %% Using the option returns einval, so it is not implemented.
   recvtos_ok({unix,freebsd}, OSVer) -> not semver_lt(OSVer, {11,2,0});
   recvtos_ok({unix,sunos}, OSVer) -> not semver_lt(OSVer, {5,12,0});
  
positive.code: 
  %% pktoptions is not supported for IPv6
  recvtclass_ok({unix,openbsd}, OSVer) -> not semver_lt(OSVer, {6,4,0});
  recvtclass_ok({unix,darwin}, OSVer) -> not semver_lt(OSVer, {17,6,0});
  recvtclass_ok({unix,sunos}, OSVer) -> not semver_lt(OSVer, {5,12,0});
  %% Using the option returns einval, so it is not implemented.
  recvtclass_ok({unix,freebsd}, OSVer) -> not semver_lt(OSVer, {11,2,0});
  
negative.code: 
  %% pktoptions is not supported for IPv4
  recvttl_ok({unix,openbsd}, OSVer) -> not semver_lt(OSVer, {6,4,0});
  recvttl_ok({unix,darwin}, OSVer) -> not semver_lt(OSVer, {19,0,0});
  %% Using the option returns einval, so it is not implemented.
  recvttl_ok({unix,freebsd}, OSVer) -> not semver_lt(OSVer, {11,2,0});
  recvttl_ok({unix,sunos}, OSVer) -> not semver_lt(OSVer, {5,12,0});
  