On Mon, Aug 17, 2020 at 11:58:39AM +0200, Pablo Neira Ayuso wrote: > On Sun, Aug 16, 2020 at 05:23:38PM -0700, Grant C wrote: > > Hello, > > > > Is there special syntax required to use a variable name instead of > > hard-coding the interface name in a declaration like the following? > > > > chain blackhole { > > type filter hook ingress device $external_interface priority -500; policy > > accept > > > > Error: syntax error, unexpected '$', expecting string or quoted string or > > string with a trailing asterisk > > type filter hook ingress device $external_interface priority -500; policy accept > > > > using the interface name directly instead of the variable works. > > > > Trying the new syntax that allows using a list, 'ingress devices = { }' also > > fails when using a variable either inside an anonymous list, or as the name > > of a named list. > > > > > > I am using nftables 9.3 from Debian Buster backports. > > Support for variable from chain device (as you use above) is available > in the nftables release (or using the current git snapshot), this is a > recent enhancement. ... in the _next_ nftables release