[Bug 1172] New: chain priority cannot be set by a defined variable

bugzilla-daemon at netfilter.org bugzilla-daemon at netfilter.org
Tue Aug 22 00:53:13 CEST 2017


            Bug ID: 1172
           Summary: chain priority cannot be set by a defined variable
           Product: nftables
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: major
          Priority: P5
         Component: nft
          Assignee: pablo at netfilter.org
          Reporter: netfilter at allycomm.com

To Replicate:

* Create an nft file that contains

define PRI_FILTER    =     0
table inet global {
    chain prerouting {
        type filter hook prerouting priority $PRI_FILTER
        policy drop

* "execute" using nft -f <that_file>

Observed Behavior:

tmp:4:46-46: Error: syntax error, unexpected '$', expecting - or number
        type filter hook prerouting priority $PRI_FILTER

Expected Behavior:

priority would be 0


For multi-part rule sets, being able to centrally manage the order of execution
is critical for ensuring robustness and correctness. Needing to manage a set of
priorities across not only multiple chains, but also multiple files is error

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