Public bug reported:
I spend the better part of a day debugging this.
Symptom: Outgoing connections (ssh, tcp to port 80, to port 8080) fail
to establish about 25% of my attempts.
I then switched the kernel from
linux-image-4.10.0-20-generic (zesty)
back to
linux-image-4.8.0-49-generic (yakkety)
and those problems were gone. I have no iptables rules on my system. I'm
using an e1000e over gigabit wired network.
Attached is a tcpdump of a connection attempt.
ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: linux-image-4.10.0-20-generic 4.10.0-20.22
ProcVersionSignature: Ubuntu 4.8.0-49.52-generic 4.8.17
Uname: Linux 4.8.0-49-generic x86_64
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: hildeb 3286 F.... pulseaudio
/dev/snd/controlC1: hildeb 3286 F.... pulseaudio
CurrentDesktop: Unity:Unity7
Date: Thu Apr 27 10:42:04 2017
HibernationDevice: RESUME=UUID=d5037585-3853-4049-a410-b17d0c104ef3
InstallationDate: Installed on 2014-06-19 (1042 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
MachineType: FUJITSU ESPRIMO E920
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-49-generic
root=UUID=e0d7cff3-bbdd-467d-b15b-fb96697320f0 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.8.0-49-generic N/A
linux-backports-modules-4.8.0-49-generic N/A
linux-firmware 1.164
RfKill:
SourcePackage: linux
UpgradeStatus: Upgraded to zesty on 2017-04-03 (23 days ago)
dmi.bios.date: 01/08/2015
dmi.bios.vendor: FUJITSU // American Megatrends Inc.
dmi.bios.version: V4.6.5.4 R1.34.0 for D3222-A1x
dmi.board.name: D3222-A1
dmi.board.vendor: FUJITSU
dmi.board.version: S26361-D3222-A1
dmi.chassis.type: 3
dmi.chassis.vendor: FUJITSU
dmi.chassis.version: C$BK02
dmi.modalias:
dmi:bvnFUJITSU//AmericanMegatrendsInc.:bvrV4.6.5.4R1.34.0forD3222-A1x:bd01/08/2015:svnFUJITSU:pnESPRIMOE920:pvr:rvnFUJITSU:rnD3222-A1:rvrS26361-D3222-A1:cvnFUJITSU:ct3:cvrC$BK02:
dmi.product.name: ESPRIMO E920
dmi.sys.vendor: FUJITSU
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug zesty
** Attachment added: "tcpdump of my connection atteempt"
https://bugs.launchpad.net/bugs/1686636/+attachment/4868517/+files/mydump.pcap
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1686636
Title:
outgoing tcp connections sometimes fail to be established
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1686636/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
