On hosts using tcpircbot, OpenStack and stat* on jessie, we're installing python-netaddr, which pulls in ieee-data. This provides a monthly cron job, which fails:
run-parts: /etc/cron.monthly/ieee-data exited with return code 1
All Debian packages querying that host on the 1st of the month is DDoSin the host providng the data, so this has been disabled in unstable:
This isn't fixed in jessie, though: We can either remove the cron job locally or (even better) get in touch with the maintainer to prepare a jessie update with the same change (or prepare an update on our own and propose it to him).