Actually there's more changed than that, sorry. The full line in question:
Apr 11 23:42:05 jet dhcpd: For info, please visit https://www.isc.org/software/dhcp/ -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org