** Changed in: qemu-kvm (Fedora)
Status: Unknown => Fix Released
** Changed in: qemu-kvm (Fedora)
Importance: Unknown => High
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Title:
** Branch linked: lp:ubuntu/lucid-proposed/libvirt
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Title:
kvm images losing connectivity w/bridged network
To manage notifications about this
Just a brief comment for who's going to read this discussion: this was
happening with bond interfaces as well, not only bridges. Everything
that's not physical seemed to be affected.
Cheers!
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Just a brief comment for who's going to read this discussion: this was
happening with bond interfaces as well, not only bridges. Everything
that's not physical seemed to be affected.
Cheers!
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** Tags added: verification-done
** Tags removed: verification-needed
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Title:
kvm images losing connectivity w/bridged network
This bug was fixed in the package libvirt - 0.7.5-5ubuntu27.11
---
libvirt (0.7.5-5ubuntu27.11) lucid-proposed; urgency=low
* add debian/patches/fix-tap-interfaces-mac-addrs.patch to prevent
network freezes due to badly chosen tap interface macaddrs.
(LP: #584048)
-- Serge
** Tags added: verification-done
** Tags removed: verification-needed
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Title:
kvm images losing connectivity w/bridged network
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This bug was fixed in the package libvirt - 0.7.5-5ubuntu27.11
---
libvirt (0.7.5-5ubuntu27.11) lucid-proposed; urgency=low
* add debian/patches/fix-tap-interfaces-mac-addrs.patch to prevent
network freezes due to badly chosen tap interface macaddrs.
(LP: #584048)
-- Serge
I've installed the libvirt package in lucid-proposed and this issue
hasn't reoccurred for me! Very happy user here. :)
Right after installation it did happen again though, but I forgot to do
'service libvirt-bin restart'. After that I've started/stopped VMs more
than 20 times, all running smooth.
I've installed the libvirt package in lucid-proposed and this issue
hasn't reoccurred for me! Very happy user here. :)
Right after installation it did happen again though, but I forgot to do
'service libvirt-bin restart'. After that I've started/stopped VMs more
than 20 times, all running smooth.
Accepted libvirt into lucid-proposed, the package will build now and be
available in a few hours. Please test and give feedback here. See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed. Thank you in advance!
** Changed in: libvirt (Ubuntu Lucid)
Accepted libvirt into lucid-proposed, the package will build now and be
available in a few hours. Please test and give feedback here. See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed. Thank you in advance!
** Changed in: libvirt (Ubuntu Lucid)
I have the same 4-second bridge freeze when using LXC containers and
lxc-start or lxc-stop. (I am using a custom script to create my LXC
containers.) I saw the reference to this above:
https://www.redhat.com/archives/libvir-list/2010-July/msg00450.html
I changed my custom script from this:
Quoting Derek Simkowiak (ubu...@cool-st.com):
I have the same 4-second bridge freeze when using LXC containers and
lxc-start or lxc-stop. (I am using a custom script to create my LXC
containers.) I saw the reference to this above:
** Package changed: qemu-kvm (Ubuntu) = libvirt (Ubuntu)
** Changed in: libvirt (Ubuntu)
Status: Invalid = Fix Released
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I have the same 4-second bridge freeze when using LXC containers and
lxc-start or lxc-stop. (I am using a custom script to create my LXC
containers.) I saw the reference to this above:
https://www.redhat.com/archives/libvir-list/2010-July/msg00450.html
I changed my custom script from this:
Quoting Derek Simkowiak (ubu...@cool-st.com):
I have the same 4-second bridge freeze when using LXC containers and
lxc-start or lxc-stop. (I am using a custom script to create my LXC
containers.) I saw the reference to this above:
** Package changed: qemu-kvm (Ubuntu) = libvirt (Ubuntu)
** Changed in: libvirt (Ubuntu)
Status: Invalid = Fix Released
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Title:
kvm
Hi Trevor,
thanks for commenting.
The package he was testing is at https://launchpad.net/~serge-
hallyn/+archive/libvirt-fix-macaddr.
This bug seems to have slipped through the cracks! I'm going to
reassign this bug to libvirt and proceed with the SRU.
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** Description changed:
Binary package hint: kvm
+
+ =
+ SRU justification:
+ 1. Impact: Networking can freeze for a while when VMs are started or stopped.
+ 2. How addressed: a patch was cherry-picked from upstream, which makes sure
to assign the libvirt
** Description changed:
Binary package hint: kvm
=
SRU justification:
1. Impact: Networking can freeze for a while when VMs are started or stopped.
- 2. How addressed: a patch was cherry-picked from upstream, which makes sure
to assign the libvirt
** Branch linked: lp:~serge-hallyn/ubuntu/lucid/libvirt/fix-macaddr
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Title:
kvm images losing connectivity w/bridged network
** Changed in: qemu-kvm (Ubuntu Lucid)
Status: Incomplete = In Progress
** Changed in: qemu-kvm (Ubuntu Lucid)
Importance: Undecided = High
** Changed in: qemu-kvm (Ubuntu Lucid)
Assignee: (unassigned) = Serge Hallyn (serge-hallyn)
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Hi Trevor,
thanks for commenting.
The package he was testing is at https://launchpad.net/~serge-
hallyn/+archive/libvirt-fix-macaddr.
This bug seems to have slipped through the cracks! I'm going to
reassign this bug to libvirt and proceed with the SRU.
--
You received this bug notification
** Description changed:
Binary package hint: kvm
+
+ =
+ SRU justification:
+ 1. Impact: Networking can freeze for a while when VMs are started or stopped.
+ 2. How addressed: a patch was cherry-picked from upstream, which makes sure
to assign the libvirt
** Description changed:
Binary package hint: kvm
=
SRU justification:
1. Impact: Networking can freeze for a while when VMs are started or stopped.
- 2. How addressed: a patch was cherry-picked from upstream, which makes sure
to assign the libvirt
** Branch linked: lp:~serge-hallyn/ubuntu/lucid/libvirt/fix-macaddr
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Title:
kvm images losing connectivity w/bridged network
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** Changed in: qemu-kvm (Ubuntu Lucid)
Status: Incomplete = In Progress
** Changed in: qemu-kvm (Ubuntu Lucid)
Importance: Undecided = High
** Changed in: qemu-kvm (Ubuntu Lucid)
Assignee: (unassigned) = Serge Hallyn (serge-hallyn)
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I know this is a old bug but I experiencing the same issue. I am running
Ubuntu 10.04.2 LTS 64 bit server and can't seem to find angriukas fix
for libvirt. Perhaps I am not looking hard enough any help would be
appreciated.
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I know this is a old bug but I experiencing the same issue. I am running
Ubuntu 10.04.2 LTS 64 bit server and can't seem to find angriukas fix
for libvirt. Perhaps I am not looking hard enough any help would be
appreciated.
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@angriukas
thanks, could you please open a new bug against libvirt in lucid,
detailing your precise symptoms with a pointer back to this bug? Then I
can use that bug to request an SRU to get the fix into lucid.
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@angriukas
thanks, could you please open a new bug against libvirt in lucid,
detailing your precise symptoms with a pointer back to this bug? Then I
can use that bug to request an SRU to get the fix into lucid.
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@Serge Hallyn
Sorry for big delay, just installed libvirt-fix-macaddr to our production
system.
No more network interrupts was observed on guest start/shutdown.
Thank you for fix.
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@Serge Hallyn
Sorry for big delay, just installed libvirt-fix-macaddr to our production
system.
No more network interrupts was observed on guest start/shutdown.
Thank you for fix.
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@Serge The outages appear random. I suspect the outage is related to bug
#633392, while the double broadcast packets must be a vlan bug. I'm
adding my findings to bug #633392.
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kvm images losing connectivity w/bridged network
https://bugs.launchpad.net/bugs/584048
You received this bug
@Serge The outages appear random. I suspect the outage is related to bug
#633392, while the double broadcast packets must be a vlan bug. I'm
adding my findings to bug #633392.
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https://bugs.launchpad.net/bugs/584048
You received this bug
I think I have this problem (or the problem at #633392) with a guest
running on a Maverick kvm host. But only on Maverick. I'm not seeing it
on any of the Lucid hosts.
The only peculiar difference I've found between the two hosts is that
tcpdumping the bridge shows double externally broadcasted
Hi Tais,
could you take a look at bug #673705? I think that one is the same problem
you are having. I don't want to connect it to this bug because this one got too
mired down in similar-but-not-identical bugs.
--
kvm images losing connectivity w/bridged network
I've traced the double packets to be a vlan issue and as such is not
related to this error.
That leaves me with a kvm guest experiencing periodical outages on a
Maverick host with no apparent differences compared to a Lucid host.
--
kvm images losing connectivity w/bridged network
Quoting Tais Plougmann Hansen (584...@bugs.launchpad.net):
I've traced the double packets to be a vlan issue and as such is not
related to this error.
That leaves me with a kvm guest experiencing periodical outages on a
Maverick host with no apparent differences compared to a Lucid host.
Do
I think I have this problem (or the problem at #633392) with a guest
running on a Maverick kvm host. But only on Maverick. I'm not seeing it
on any of the Lucid hosts.
The only peculiar difference I've found between the two hosts is that
tcpdumping the bridge shows double externally broadcasted
Hi Tais,
could you take a look at bug #673705? I think that one is the same problem
you are having. I don't want to connect it to this bug because this one got too
mired down in similar-but-not-identical bugs.
--
kvm images losing connectivity w/bridged network
I've traced the double packets to be a vlan issue and as such is not
related to this error.
That leaves me with a kvm guest experiencing periodical outages on a
Maverick host with no apparent differences compared to a Lucid host.
--
kvm images losing connectivity w/bridged network
Quoting Tais Plougmann Hansen (584...@bugs.launchpad.net):
I've traced the double packets to be a vlan issue and as such is not
related to this error.
That leaves me with a kvm guest experiencing periodical outages on a
Maverick host with no apparent differences compared to a Lucid host.
Do
I have not had the opportunity to test multiple guests on the Maverick
host since I've had quite a few problems with it.
Right now it seems like the problem I'm seeing is related to a vlan bug
very similar to the one reported in bug #658460. The outages appear
random but it looks like it occurs
Traced the problem to mal-functioning server motherboard. Replacement of
motherboard fixed several errors reported in the logs. Yet monitoring
closely.
** Changed in: opensuse
Status: New = Invalid
--
kvm images losing connectivity w/bridged network
https://bugs.launchpad.net/bugs/584048
Traced the problem to mal-functioning server motherboard. Replacement of
motherboard fixed several errors reported in the logs. Yet monitoring
closely.
** Changed in: opensuse
Status: New = Invalid
--
kvm images losing connectivity w/bridged network
https://bugs.launchpad.net/bugs/584048
I'm looking over the history of this particular bug, and there at least
3 or 4 different bugs represented here. We should have been stricter
from the start about filing separate bugs.
@Billy Charlton
Can you tell us whether you are still having a problem? Yours appears
likely to be a bug in
** Also affects: qemu-kvm (Ubuntu Lucid)
Importance: Undecided
Status: New
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FYI, there is yet another way (or two) to lose connectivity to KVM VM --
bug 579276
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You received this bug notification because you are a member of Ubuntu
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(Marking this invalid for Maverick until someone can confirm that they have the
same problem as Billy has on Maverick)
** Changed in: qemu-kvm (Ubuntu Lucid)
Status: New = Incomplete
** Changed in: qemu-kvm (Ubuntu Maverick)
Status: Fix Committed = Invalid
--
kvm images losing
Yup, thanks for the link, Sergey. I don't know that this is a dup of that, but
I
suspect that it is likewise a kernel bug and not a kvm one.
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https://bugs.launchpad.net/bugs/584048
You received this bug notification because you are a member of
Serge: I opened the new bug report as you requested, here:
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/633392
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kvm images losing connectivity w/bridged network
https://bugs.launchpad.net/bugs/584048
You received this bug notification because you are a member of Ubuntu
Server Team,
I'm looking over the history of this particular bug, and there at least
3 or 4 different bugs represented here. We should have been stricter
from the start about filing separate bugs.
@Billy Charlton
Can you tell us whether you are still having a problem? Yours appears
likely to be a bug in
** Also affects: qemu-kvm (Ubuntu Lucid)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/584048
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FYI, there is yet another way (or two) to lose connectivity to KVM VM --
bug 579276
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https://bugs.launchpad.net/bugs/584048
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(Marking this invalid for Maverick until someone can confirm that they have the
same problem as Billy has on Maverick)
** Changed in: qemu-kvm (Ubuntu Lucid)
Status: New = Incomplete
** Changed in: qemu-kvm (Ubuntu Maverick)
Status: Fix Committed = Invalid
--
kvm images losing
Yup, thanks for the link, Sergey. I don't know that this is a dup of that, but
I
suspect that it is likewise a kernel bug and not a kvm one.
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https://bugs.launchpad.net/bugs/584048
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Serge: I opened the new bug report as you requested, here:
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/633392
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https://bugs.launchpad.net/bugs/584048
You received this bug notification because you are a member of Ubuntu
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The patch which I'm waiting on Santi or Andrew to test is in the
libvirt package in Maverick, so setting the status appropriately
(I hope) there to 'Fix Released'.
** Changed in: qemu-kvm (Ubuntu Maverick)
Status: Triaged = Fix Released
** Changed in: qemu-kvm (Ubuntu Maverick)
(ok, i give - can't seem to find a way to track this separately for Lucid and
older
versus maverick)
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Serge,
I'm testing the new packages now, I'll let you know what I find.
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Serge,
No dice; the same problem occurs.
Curiously, running the /etc/netstart script in OpenBSD works to restore
connectivity, which fails again after a bit.
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https://bugs.launchpad.net/bugs/584048
You received this bug notification because
The patch which I'm waiting on Santi or Andrew to test is in the
libvirt package in Maverick, so setting the status appropriately
(I hope) there to 'Fix Released'.
** Changed in: qemu-kvm (Ubuntu Maverick)
Status: Triaged = Fix Released
** Changed in: qemu-kvm (Ubuntu Maverick)
(ok, i give - can't seem to find a way to track this separately for Lucid and
older
versus maverick)
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Serge,
I'm testing the new packages now, I'll let you know what I find.
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Serge,
No dice; the same problem occurs.
Curiously, running the /etc/netstart script in OpenBSD works to restore
connectivity, which fails again after a bit.
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** Also affects: opensuse
Importance: Undecided
Status: New
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** Tags added: server-mrs
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** Also affects: opensuse
Importance: Undecided
Status: New
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** Tags added: server-mrs
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@Serge: I reported the bug, you can find it in: #626662
Frank
2010/8/27 Serge Hallyn 584...@bugs.launchpad.net:
Thanks, Frank. Would you mind opening a separate bug about your issue,
summarizing your network topology, how you start the VMs (the libvirt xml
or kvm command line or both), and
@Serge: I reported the bug, you can find it in: #626662
Frank
2010/8/27 Serge Hallyn 584...@bugs.launchpad.net:
Thanks, Frank. Would you mind opening a separate bug about your issue,
summarizing your network topology, how you start the VMs (the libvirt xml
or kvm command line or both), and
Hi Serge,
Thanks for your time!
The problem is not with the mac addresses (at least not for me). As I reported
earlier:
For me, these are not related, because I'm not modifying the bridge
when the connectivity is lost. As long as there is steady network
trafic (for example a ping every
Thanks, Frank. Would you mind opening a separate bug about your issue,
summarizing your network topology, how you start the VMs (the libvirt xml
or kvm command line or both), and at what point you lose connectivity?
Can Santi or Andrew (or Billy, the original poster) test the proposed
package?
I'll go ahead and test the package when I have a minute here; I've
multiple other servers that need attention.
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https://bugs.launchpad.net/bugs/584048
You received this bug notification because you are a member of Ubuntu
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Hi Serge,
Thanks for your time!
The problem is not with the mac addresses (at least not for me). As I reported
earlier:
For me, these are not related, because I'm not modifying the bridge
when the connectivity is lost. As long as there is steady network
trafic (for example a ping every
Thanks, Frank. Would you mind opening a separate bug about your issue,
summarizing your network topology, how you start the VMs (the libvirt xml
or kvm command line or both), and at what point you lose connectivity?
Can Santi or Andrew (or Billy, the original poster) test the proposed
package?
I'll go ahead and test the package when I have a minute here; I've
multiple other servers that need attention.
--
kvm images losing connectivity w/bridged network
https://bugs.launchpad.net/bugs/584048
You received this bug notification because you are a member of Ubuntu
Bugs, which is
** Also affects: qemu-kvm (Fedora) via
https://bugzilla.redhat.com/show_bug.cgi?id=571991
Importance: Unknown
Status: Unknown
** Changed in: qemu-kvm (Ubuntu)
Status: Confirmed = Triaged
** Also affects: qemu-kvm (Ubuntu Maverick)
Importance: High
Assignee: Serge
I'm still waiting for the build system to get around to building these, but I've
uploaded packages with the proposed fix to ppa:serge-hallyn/libvirt-fix-macaddr
for lucid and hardy. Santi, Frank, or Andrew, can any of you test with this
package and see if it solves the problem for you?
--
kvm
** Also affects: qemu-kvm (Fedora) via
https://bugzilla.redhat.com/show_bug.cgi?id=571991
Importance: Unknown
Status: Unknown
** Changed in: qemu-kvm (Ubuntu)
Status: Confirmed = Triaged
** Also affects: qemu-kvm (Ubuntu Maverick)
Importance: High
Assignee: Serge
I'm still waiting for the build system to get around to building these, but I've
uploaded packages with the proposed fix to ppa:serge-hallyn/libvirt-fix-macaddr
for lucid and hardy. Santi, Frank, or Andrew, can any of you test with this
package and see if it solves the problem for you?
--
kvm
I think I'm having the same debilitating problem. Especially after
adding a fourth and fifth VM, packet loss would increase over time,
until the host and guests would become completely unreachable. I've
added keep-alive pings to all guests and the host, which seems to be
helping. Still, hasn't got
I think I'm having the same debilitating problem. Especially after
adding a fourth and fifth VM, packet loss would increase over time,
until the host and guests would become completely unreachable. I've
added keep-alive pings to all guests and the host, which seems to be
helping. Still, hasn't got
Any updates on this? I still have this problem, running 2 LTS releases,
Hardy as host and Lucid as guest, both simple server installs, with KVM,
virtio, tap devices and a bridge...
--
kvm images losing connectivity w/bridged network
https://bugs.launchpad.net/bugs/584048
You received this bug
Oh, btw, Serge: I'm not using anything like wicd or networkmanager, this
is on a server.
** Changed in: qemu-kvm (Ubuntu)
Status: Incomplete = Confirmed
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kvm images losing connectivity w/bridged network
https://bugs.launchpad.net/bugs/584048
You received this bug notification because
Any updates on this? I still have this problem, running 2 LTS releases,
Hardy as host and Lucid as guest, both simple server installs, with KVM,
virtio, tap devices and a bridge...
--
kvm images losing connectivity w/bridged network
https://bugs.launchpad.net/bugs/584048
You received this bug
Oh, btw, Serge: I'm not using anything like wicd or networkmanager, this
is on a server.
** Changed in: qemu-kvm (Ubuntu)
Status: Incomplete = Confirmed
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kvm images losing connectivity w/bridged network
https://bugs.launchpad.net/bugs/584048
You received this bug notification because
I verified that my problem is the same of RedHat bug 571991 and I am
losing connectivity because of the bridge change its MAC address.
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You received this bug notification because you are a member of Ubuntu
Quoting Paolo Maero (fabric...@gmail.com):
I verified that my problem is the same of RedHat bug 571991 and I am
losing connectivity because of the bridge change its MAC address.
Thanks, Paolo, so then launchpad bug # 579892 is the one you want.
It looks like a fix was *just* sent upstream.
I verified that my problem is the same of RedHat bug 571991 and I am
losing connectivity because of the bridge change its MAC address.
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https://bugs.launchpad.net/bugs/584048
You received this bug notification because you are a member of Ubuntu
Quoting Paolo Maero (fabric...@gmail.com):
I verified that my problem is the same of RedHat bug 571991 and I am
losing connectivity because of the bridge change its MAC address.
Thanks, Paolo, so then launchpad bug # 579892 is the one you want.
It looks like a fix was *just* sent upstream.
These may be related:
https://bugzilla.redhat.com/show_bug.cgi?id=571991 libvirt should not
use the MAC address assigned to tap devices/vnet interfaces by the
TAP/TUN driver.
https://www.redhat.com/archives/libvir-list/2010-July/msg00450.html
[libvirt] [PATCH] Set a stable high MAC addr for
For me, these are not related, because I'm not modifying the bridge
when the connectivity is lost. As long as there is steady network
trafic (for example a ping every minute), the connectivity is not
lost. As soon as I stop this, the connectivity will be lost within a
few hours.
--
kvm images
I am also not modifying the bridge at all.
Where my problem differs from Frank's, however, is my connectivity is
lost even if there is steady network traffic to or from the guest.
--
kvm images losing connectivity w/bridged network
https://bugs.launchpad.net/bugs/584048
You received this bug
These may be related:
https://bugzilla.redhat.com/show_bug.cgi?id=571991 libvirt should not
use the MAC address assigned to tap devices/vnet interfaces by the
TAP/TUN driver.
https://www.redhat.com/archives/libvir-list/2010-July/msg00450.html
[libvirt] [PATCH] Set a stable high MAC addr for
For me, these are not related, because I'm not modifying the bridge
when the connectivity is lost. As long as there is steady network
trafic (for example a ping every minute), the connectivity is not
lost. As soon as I stop this, the connectivity will be lost within a
few hours.
--
kvm images
I am also not modifying the bridge at all.
Where my problem differs from Frank's, however, is my connectivity is
lost even if there is steady network traffic to or from the guest.
--
kvm images losing connectivity w/bridged network
https://bugs.launchpad.net/bugs/584048
You received this bug
Quoting Andrew Klettke (584...@bugs.launchpad.net):
So now is this going through the firewall?
This is from the firewall.
What kind of firewall? Do other hosts inside the firewall have the
right ARP entry for the guest? What about the host itself?
It's a simple i386 OpenBSD 4.7 box with
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