[dsc] Allow multiple bpf_program and append content

[Klaus Darilion]

Not a "must", but makes long filter more readable.

Correct sampling is more important ;-)

regards
Klaus

> -----Ursprüngliche Nachricht-----
> Von: dsc [mailto:dsc-bounces at dns-oarc.net] Im Auftrag von Jerry Lundström
> Gesendet: Montag, 16. Jänner 2017 13:41
> An: dsc at dns-oarc.net
> Betreff: [dsc] Allow multiple bpf_program and append content
> 
> Hi all,
> 
> Please share your thought on if this is a good feature/enhancement:
> 
>   https://github.com/DNS-OARC/dsc/issues/127
> 
> Related to #108, suggestion is to allow for multiple bpf_program and
> append content to previous including one space as delimiter.
> 
>   bpf_program "udp port 53";
>   bpf_program "and (";
>   bpf_program "host 192.168.0.1";
>   bpf_program "or host 192.168.0.2";
>   bpf_program ")";
> 
> Cheers,
> Jerry
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