Created attachment 274019 [details] Hardinfo Generated System Report and Information PLEASE SEE THE ORIGINAL BUG REPORT AT CANONICAL'S LAUNCHPAD: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1747701 _____ Download speeds are incredibly slow over Ethernet using an SS USB (3.x) to Gigabit Ethernet adapter. The problem is not with the ISP or router configuration, as I have tested on several devices with both WiFi and Gigabit Ethernet, prioritizing traffic to the device testing from. Direct internet speeds to my router are a solid ~90 Down/~90 Up. WiFi speeds tend to be around 80 Down/80 Up on my Linux system I am having the issue with, and Gigabit Ethernet speeds vary anywhere from 2-10 Down/20-65 Up. I've never once had a time where WiFi actually performed *better* than a solid network connection, either. See the attached HardInfo Generated System Report and below Ubuntu-Bug debugging info. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-lowlatency 4.13.0.32.34 ProcVersionSignature: Ubuntu 4.13.0-32.35-lowlatency 4.13.13 Uname: Linux 4.13.0-32-lowlatency x86_64 ApportVersion: 2.20.7-0ubuntu3.7 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jeb 12678 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Tue Feb 6 10:31:29 2018 HibernationDevice: RESUME=UUID=dc0e59b0-c3f8-4113-9ea4-87b3b2e0c112 MachineType: Dell Inc. Inspiron 13-5368 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-32-lowlatency root=UUID=b0b38a57-52b5-4e23-be9e-85197724f378 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.13.0-32-lowlatency N/A linux-backports-modules-4.13.0-32-lowlatency N/A linux-firmware 1.169.3 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/14/2017 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.14.0 dmi.board.name: 01DC01 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.14.0:bd09/14/2017:svnDellInc.:pnInspiron13-5368:pvr:rvnDellInc.:rn01DC01:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.family: Inspiron dmi.product.name: Inspiron 13-5368 dmi.sys.vendor: Dell Inc.
Did you configure ebtables to do MAC spoofing? or do Proxy ARP? See https://wiki.debian.org/BridgeNetworkConnections Check for MTU mismatch. Bridges are Layer 2 devices and can not forward (or notify of error) when a large packet has to be forwarded to a device that can't accept it.