regression: IPv6 PMTU discovery fails with source-specific routing
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
High
|
Unassigned | ||
Bionic |
Confirmed
|
High
|
Unassigned |
Bug Description
IPv6 PMTU discovery fails when using source-specific routing on Ubuntu 18.04.
I have attached a test case called pmtu-sads.sh which is based on tools/testing/
I have verified that the test fails on:
Ubuntu 18.04 with 4.15.0-30.32
Ubuntu 18.04 with 4.17.0-
Ubuntu 18.04 with 4.18.3-
The test succeeds on Ubuntu 16.04 with 4.4.0.131.137 which makes it a regression.
System information:
Ubuntu 4.15.0-
Description: Ubuntu 18.04.1 LTS
Release: 18.04
See below for a patch which is working for me. I'm currently using linux kernel 4.15.0-32.35 built from git://kernel.
---
ProblemType: Bug
AlsaVersion: Advanced Linux Sound Architecture Driver Version k4.15.0-30-generic.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/hwC0D0', '/dev/snd/
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer': 'amixer'
Card0.Amixer.
DistroRelease: Ubuntu 18.04
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
Lsusb:
Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
Package: linux (not installed)
ProcFB: 0 qxldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
ProcVersionSign
RelatedPackageV
linux-
linux-
linux-firmware 1.173.1
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
Tags: bionic
Uname: Linux 4.15.0-30-generic x86_64
UnreportableReason: This report is about a package that is not installed.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: False
dmi.bios.date: 04/01/2014
dmi.bios.vendor: SeaBIOS
dmi.bios.version: 1.10.2-1ubuntu1
dmi.chassis.type: 1
dmi.chassis.vendor: QEMU
dmi.chassis.
dmi.modalias: dmi:bvnSeaBIOS:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.
dmi.sys.vendor: QEMU
description: | updated |
tags: | added: patch |
Changed in linux (Ubuntu): | |
status: | Incomplete → New |
Changed in linux (Ubuntu): | |
status: | Incomplete → In Progress |
Changed in linux (Ubuntu Bionic): | |
status: | Incomplete → In Progress |
Changed in linux (Ubuntu Bionic): | |
status: | In Progress → Confirmed |
Changed in linux (Ubuntu): | |
status: | In Progress → Confirmed |
Changed in linux (Ubuntu Bionic): | |
assignee: | Joseph Salisbury (jsalisbury) → nobody |
Changed in linux (Ubuntu): | |
assignee: | Joseph Salisbury (jsalisbury) → nobody |
tags: | added: cscc |
Patch which fixes the bug for me.