Package: isc-dhcp-server Version: 4.3.5-3+deb9u1 When you run dhcp-lease-list without an OUI file installed, it complains and provides a web link to download one. This web link is out of date and results in a 404 error. Correction follows:
/usr/sbin/dhcp-lease-list Line 33 -my $OUI_URL = 'http://standards.ieee.org/regauth/oui/oui.txt'; +my $OUI_URL = 'http://standards-oui.ieee.org/oui/oui.txt';
