Good day, IPADDRESSNUM option is broken at the moment (Debian Stretch). No matter what you enter as a value, apticron prints all IP addresses configured on all interfaces.
Here's a patch to fix that: --- /usr/sbin/apticron.orig 2018-01-26 12:26:28.922306275 +0100 +++ /usr/sbin/apticron 2018-01-26 12:43:41.301300387 +0100 @@ -82,8 +82,7 @@ if [ -z "$IPADDRESSES" ] && [ -x /sbin/ip ]; then # Set the IPv4 addresses - IPADDRESSES=`(echo $( /bin/hostname --all-ip-addresses ) ; - /sbin/ip -f inet addr show scope global 2> /dev/null | \ + IPADDRESSES=`(/sbin/ip -f inet addr show scope global 2> /dev/null | \ /bin/grep "scope global" |\ /usr/bin/head -$IPADDRESSNUM |\ /usr/bin/awk '{ print $2 }' |\ -- Krzysztof Raczkowski racz...@gmail.com