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Message #56823
[Bug 1310586] Re: Multicast snooping on bridge breaks ICMP6 neighbor solicitation for KVM guests
Unfortunately I wont be able to test the mainline kernel any time soon.
However, I see that the relevant patches described in the netdev thread
are merged into the 3.13 tree:
bridge: multicast: add sanity check for query source addresses
bridge: multicast: add sanity check for general query destination
bridge: multicast: enable snooping on general queries only
Including these patches in the Ubuntu 14.04 kernel should resolve this
issue.
** Tags added: kernel-unable-to-test-upstream
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https://bugs.launchpad.net/bugs/1310586
Title:
Multicast snooping on bridge breaks ICMP6 neighbor solicitation for
KVM guests
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
Ubuntu 3.13.0-24.46-generic 3.13.9 seems to be affected by the same
bug as described here: http://patchwork.ozlabs.org/patch/326048/
The suggested workaround (echo 0 > /sys/class/net/br0/bridge/multicast_snooping) solves IPv6-problems for KVM guests.
---
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Apr 20 15:03 seq
crw-rw---- 1 root audio 116, 33 Apr 20 15:03 timer
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory
DistroRelease: Ubuntu 14.04
IwConfig: Error: [Errno 2] No such file or directory
Lsusb:
Bus 001 Device 002: ID 12d1:1001 Huawei Technologies Co., Ltd. E169/E620/E800 HSDPA Modem
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: Supermicro X7DBN
Package: linux (not installed)
PciMultimedia:
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=/dev/mapper/ssd-root ro bootdegraded=true apparmor=0 panic=10 console=tty0 console=ttyS1,115200 nomdmonddf nomdmonisw nomdmonddf nomdmonisw
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
RelatedPackageVersions:
linux-restricted-modules-3.13.0-24-generic N/A
linux-backports-modules-3.13.0-24-generic N/A
linux-firmware 1.127
RfKill: Error: [Errno 2] No such file or directory
Tags: trusty
Uname: Linux 3.13.0-24-generic x86_64
UpgradeStatus: Upgraded to trusty on 2014-04-18 (2 days ago)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 07/04/2011
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: 2.1c
dmi.board.name: X7DBN
dmi.board.vendor: Supermicro
dmi.board.version: PCB Version
dmi.chassis.type: 1
dmi.chassis.vendor: Supermicro
dmi.chassis.version: 0123456789
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr2.1c:bd07/04/2011:svnSupermicro:pnX7DBN:pvr0123456789:rvnSupermicro:rnX7DBN:rvrPCBVersion:cvnSupermicro:ct1:cvr0123456789:
dmi.product.name: X7DBN
dmi.product.version: 0123456789
dmi.sys.vendor: Supermicro
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