Thank you for reporting a bug. The MAC in the log entry comes from the kernel and contains several pieces of information: the src MAC, the dst MAC and the TYPE. See http://logi.cc/en/2010/07/netfilter-log-format/
** Information type changed from Private Security to Public ** Package changed: ufw (Ubuntu) => linux (Ubuntu) ** Changed in: linux (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1590391 Title: On ufw report MAC erroneous Status in linux package in Ubuntu: Invalid Bug description: Here is one line from ufw.log: Jun 6 08:25:19 asu-ALABAMA kernel: [ 2774.165200] [UFW BLOCK] IN=enp1s0 OUT= MAC=xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx SRC=191.189.xxx.xxx DST=192.168.0.2 LEN=52 TOS=0x00 PREC=0x00 TTL=48 ID=8515 DF PROTO=TCP SPT=55262 DPT=33064 WINDOW=8192 RES=0x00 SYN URGP=0 On MAC= indicator first 6 group digits is my mac but the rest no ideea. What is this? ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ufw 0.35-0ubuntu2 ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CurrentDesktop: MATE Date: Wed Jun 8 14:22:45 2016 InstallationDate: Installed on 2016-04-29 (39 days ago) InstallationMedia: Ubuntu-Studio 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) PackageArchitecture: all SourcePackage: ufw UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1590391/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp