On ufw report MAC erroneous

[asu]

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)

[Jamie Strandboge (jdstrand)]

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/