create_matrix.sh

#!/usr/bin/env bash
#
# Build for interactive use, i. e. set PATH accordingly if run via cron
#
# Read as206946-hosts.txt and generate a matrix of connections, then add as206946-links.txt
# to generate as206946-tunnel.txt

awk < as206946-hosts.txt >/tmp/tunnel-$$.tmp '{host[++num]=$1;} END {for(i=1; i<=num; i++) { for(j=i; j<=num; j++) {if(host[i] != host[j]) printf("%s:%s l2tp-ll\n", host[i], host[j]);}}}'
cat /tmp/tunnel-$$.tmp as206946-links.txt | sort -u >as206946-tunnel.txt
rm /tmp/tunnel-$$.tmp