[Bug 1409] New: nft manpage makes confusing reference to logical operators

bugzilla-daemon at netfilter.org bugzilla-daemon at netfilter.org
Thu Feb 27 07:01:12 CET 2020


https://bugzilla.netfilter.org/show_bug.cgi?id=1409

            Bug ID: 1409
           Summary: nft manpage makes confusing reference to logical
                    operators
           Product: nftables
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5
         Component: nft
          Assignee: pablo at netfilter.org
          Reporter: cheetah-netfilter at fastcat.org

The nft manpage / docs say:

> Expressions can be combined using binary, logical, relational and other types of
> expressions to form complex or relational (match) expressions

http://git.netfilter.org/nftables/tree/doc/nft.txt#n680

However it's not clear if logical combinations are actually possible? 
https://bugzilla.netfilter.org/show_bug.cgi?id=1202#c1 explicitly states that
disjunctions are definitely not supported, so logical OR, and XOR are right
out, and given that I'd say NAND almost certainly is too.  The only combining
operator for matches is AND.

Also, rummaging through the grammar file seems to confirm that there are only
_bitwise_ operators.

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