Re: [PATCH nf-next 3/6] netfilter: nf_tables: disable old tracing if listener is present

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On Wednesday 2015-11-25 17:53, Patrick McHardy wrote:
>> 
>> What I think is a doable way is to output the rule in evaluation order -
>> basically, the way it was input.
>> If the IP TTL is not that important, perhaps that expression should
>> have been moved "to the back" when the rule was generated by the
>> userspace tool before being entered into the kernel.
>
>Its a decoded packet dump, not the rule.

Would it be possible to make the program which receives the trace over
netlink to take a command-line argument or a filename that specifies
which expressions to preferentially order to the left?
Something like

 trace --fields=ip.saddr,ip.daddr,tcp.dport,ip.ttl,*

(the ,* part being implicit if omitted)
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