path: root/extensions
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authorPhil Sutter <>2022-06-30 18:04:39 +0200
committerPhil Sutter <>2022-07-02 02:15:30 +0200
commit552c4a2f9e5706fef5f7abb27d1492a78bbb2a37 (patch)
tree7d13934ba33f0aa0b8490bdef01d69c50168e979 /extensions
parent9ea7e6aa638d0dfa14613f6f97e6dc06c857e609 (diff)
libxtables: Fix unsupported extension warning corner case
Some extensions are not supported in revision 0 by user space anymore, for those the warning in xtables_compatible_revision() does not print as no revision 0 is tried. To fix this, one has to track if none of the user space supported revisions were accepted by the kernel. Therefore add respective logic to xtables_find_{target,match}(). Note that this does not lead to duplicated warnings for unsupported extensions that have a revision 0 because xtables_compatible_revision() returns true for them to allow for extension's help output. For the record, these ip6tables extensions are affected: set/SET, socket, tos/TOS, TPROXY and SNAT. In addition to that, TEE is affected for both families. Fixes: 17534cb18ed0a ("Improve error messages for unsupported extensions") Signed-off-by: Phil Sutter <>
Diffstat (limited to 'extensions')
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