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@@ -158,9 +158,13 @@ get_qubes_managed_iface() {
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fi
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}
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+# Based on: https://forums.gentoo.org/viewtopic-t-888736-start-0.html
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get_prefix_from_subnet() {
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local subnet="$1"
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- prefix="$(ipcalc -p 0.0.0.0 "$subnet" | sed 's/PREFIX=//')"
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+ local x=${subnet##*255.}
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+ set -- 0^^^128^192^224^240^248^252^254^ $(( (${#1} - ${#x})*2 )) "${x%%.*}"
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+ x=${1%%$3*}
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+ prefix=$(( $2 + (${#x}/4) ))
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if [ "x$prefix" != "x" ]; then
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echo "$prefix"
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