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#! /bin/sh
#
# printf '%s %s\n' hostname IP-address for each known public retiolum address
#
set -eu
cd /etc/tinc/retiolum/hosts
grep --with-filename '^Address' * |
sed '
# filter "%s %s %s\n" hostname var val
s/: */ /
s/ *= */ /
# filter "%s %s\n" hostname address
s/ Address \([a-zA-Z0-9.:_]*\) \?.*/ \1/
T
# prepare hostname lookup
/:/!{/ [0-9.]*$/!{s/ / `dig +short /;s/$/` \&/}}
s/^/echo /
$s/$/\nwait/
# perform hostname lookup
' | sh | sed '
# drop private IPv4 addresses
/ 10\./d
/ 172\.\(1[6-9]\|2[0-9]\|3[01]\)\./d
/ 192\.168\./d
# TODO drop private IPv6 addresses
'
|
