[iptables PATCH 0/2] Improve error messages for unsupported extensions

[Phil Sutter <phil@nwl.cc>]

Failure to load an extension leads to iptables cmdline parser
complaining about any extension options instead of the extension itself.
This is at least misleading.

This series eliminates the odd error message and instead adds a warning
if a requested extension is not available at all in kernel.

Things are a bit complicated due to the fact that newer kernels not
necessarily support revision 0 of all extensions. So change iptables
first to only register revision 0 if no higher one was accepted earlier.
This allows for a "not even revision 0 is supported" logic.

Phil Sutter (2):
  libxtables: Register only the highest revision extension
  Improve error messages for unsupported extensions

 iptables/nft.c       | 12 +++++++++---
 libxtables/xtables.c | 17 ++++++++++++++---
 2 files changed, 23 insertions(+), 6 deletions(-)

-- 
2.34.1