So, did some debugging into this, yes, previous suggestions are correct. CodeSigning was the issue as Apple neglected to CodeSign their own product for this kext (file lists below). I'm assuming Apple will be releasing an update before the 6S and 10.11's release as some features in the code itself may hook into both the 6S and 10.11.
https://secure-appldnld.apple.com/itunes12/031-31872-20150813-B2459290-41B7-11E5 -A64D-900D11BA098F/iTunes12.2.2.dmg for 12.2.2. Delete or backup /Applications/iTunes.app then install. It'll overwrite with the older files and maybe keep iTunes 12.3 with the older .kext as needed. Enjoy.
iTunes 12.2.2 AppleUSBEthernetHost:
3910870 0 drwxr-xr-x 3 root wheel 102 Jan 9 2015 .
3910871 0 drwxr-xr-x 6 root wheel 204 Jan 9 2015 ./Contents
3910872 0 drwxr-xr-x 3 root wheel 102 Jan 9 2015 ./Contents/_CodeSignature
3910873 8 -rw-r--r-- 1 root wheel 3668 Jan 9 2015 ./Contents/_CodeSignature/CodeResources
3910874 8 -rw-r--r-- 1 root wheel 3202 Jan 9 2015 ./Contents/Info.plist
3910875 0 drwxr-xr-x 3 root wheel 102 Jan 9 2015 ./Contents/MacOS
3910876 128 -rwxr-xr-x 1 root wheel 63024 Jan 9 2015 ./Contents/MacOS/AppleUSBEthernetHost
3910877 8 -rw-r--r-- 1 root wheel 474 Jan 9 2015 ./Contents/version.plist
iTunes 12.3 AppleUSBEthernetHost (year is 2015 on file date/time stamps):
3920002 0 drwxr-xr-x 5 root wheel 170 Aug 4 17:30 ./Contents
3920006 8 -rw-r--r-- 1 root wheel 3202 Aug 4 17:30 ./Contents/Info.plist
3920004 0 drwxr-xr-x 3 root wheel 102 Aug 4 17:30 ./Contents/MacOS
3920005 144 -rwxr-xr-x 1 root wheel 71792 Aug 4 17:30 ./Contents/MacOS/AppleUSBEthernetHost
3920003 8 -rw-r--r-- 1 root wheel 473 Aug 4 17:30 ./Contents/version.plist