Ditched netcfg[1]. It worked very well, though! However, I realized
that I don't need it. A couple of "ip link ..." and "ip addr ..."
statements do the job as well.
I'm on the safe side when using iproute2. netcfg may change in the
future or it may get superseded by another tool. I'm too lazy for
changes like that.
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1.
https://www.archlinux.org/netcfg/