Hi folks I updated one of our systems to Squid 3.4.1 today and have noticed that MAC addresses are no longer being recorded by our logformat using the %>eui code. They all come up as 00:00:00:00:00:00. Logformat: logformat custom %ts %{%d/%b/%Y-%H:%M:%S-%Z}tl %6tr %>eui %>a %Ss %>Hs %<st %rm %ru %ssl::bump_mode %Sh/%<a %mt Log excerpt: 1386822496 12/Dec/2013-15:28:16-EST 335 00:00:00:00:00:00 10.0.1.5 TCP_MISS 200 324 GET http://www.apple.com/library/test/success.html - HIER_DIRECT/23.2 09.205.15 text/html Is this a bug or something I’ve overlooked in the release notes? Thanks!