fixing containerd filters

[steiler]

adding additional escaping and fixing the filter string building

[steiler]

Swapped in your cut orgy for a perl regex. ;-)
Now interface index is properly matched and can be found on the host.

[hellt]

not ever in my wildest nightmares I had a line of perl code in the projects I take part in 🤣

but thanks a lot, lets do this, maybe I will swap it later for regex-flavored grep

[hellt]

I guess you also need to close that issue in containerd repo?