Bug 711154
| Summary: | error if ipv6 blacklisted and starting guest: cannot create bridge 'virbr1': Package not installed | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Cristian Ciupitu <cristian.ciupitu> | ||||
| Component: | libvirt | Assignee: | Libvirt Maintainers <libvirt-maint> | ||||
| Status: | CLOSED NOTABUG | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 15 | CC: | aquini, berrange, clalance, crobinso, ddick, hbrock, h.reindl, itamar, jforbes, laine, veillard, virt-maint, zkabelac | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2012-06-07 00:24:47 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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It seems that this was caused by the blacklisting of the ipv6 kernel module. I used the method from http://fedorasolved.org/network-solutions/disable-ipv6 to disable IPv6, i.e. I created /etc/modprobe.d/blacklist-ipv6.conf with the following content: install ipv6 /bin/true blacklist ipv6 This might be one of those 'don't do that' situations :) but I'm not sure if ipv6 should be required for virtual networking to work. Either way, the error message is crappy, so we should fix that. This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component. This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component. confirmed for F15 and affects any sort of "/usr/sbin/brctl addbr"
F14 has no problem with this
[root@thx1138:~]$ cat /etc/modprobe.d/disable-ipv6.conf
blacklist ipv6
blacklist net-pf-10
install net-pf-10 /bin/true
install ipv6 /bin/true
[root@thx1138:~]$ ifconfig br0
br0 Link encap:Ethernet Hardware Adresse 00:50:56:BD:00:03
inet Adresse:10.0.0.134 Bcast:10.0.0.255 Maske:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:340989 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
Kollisionen:0 Sendewarteschlangenlänge:0
RX bytes:17813211 (16.9 MiB) TX bytes:0 (0.0 b)
___________________________________________
on F15 "brctl" does not give the error if ipv6 is disabled as followed
[root@srv-rhsoft:~]$ cat /etc/modprobe.d/disable-ipv6.conf
options ipv6 disable=1
options net-pf-10 disable=1
This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component. This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component. This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component. This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component. libvirtd[497]: 2012-05-17 11:34:36.612+0000: 590: error : virCommandWait:2306 : vnitřní chyba Child process (/bin/sh -c IPT=/usr/sbin/ip6tables
libvirtd[497]: cmd='$IPT -n -L FORWARD'
libvirtd[497]: eval res=\$\("${cmd} 2>&1"\)
libvirtd[497]: if [ $? -ne 0 ]; then echo "Failure to execute command '${cmd}' : '${res}'."; exit 1;fi
libvirtd[497]: ) status unexpected: exit status 1
libvirtd[497]: 2012-05-17 11:34:36.614+0000: 590: error : ebiptablesDriverInit:4119 : Testing of ip6tables command failed: Failure to execute command '$IPT -n -L FORWARD' : 'ip6tables v1.4.12.2: can't initialize ip6tables table `filter': Table does not exist (do you need to insmod?)
libvirtd[497]: Perhaps ip6tables or your kernel needs to be upgraded.'.
libvirtd[497]: 2012-05-17 11:34:38.126+0000: 590: error : virDomainDefParseXML:8632 : nepodporovaná konfigurace: Only the first console can be a serial port
I've this in my /var/log/messages.
Perhaps it's the related issue?
My modprobe config has this 2 extra lines to disable IPv6 on my system:
# disable IPV6
alias net-pf-10 off
blacklist ipv6
libvirt-client-0.9.12-1.fc18.x86_64
libvirt-daemon-config-nwfilter-0.9.12-1.fc18.x86_64
libvirt-docs-0.9.12-1.fc18.x86_64
libvirt-daemon-0.9.12-1.fc18.x86_64
IMHO libvirt should be able to handle systems without IPv6.
> My modprobe config has this 2 extra lines to disable IPv6 on my system: > > # disable IPV6 > alias net-pf-10 off > blacklist ipv6 i guess the first one is your problem because "blacklist ipv6" does no longer work, so you HAVE ipv6 (look at ifconfig, it is there) but disabled ip6tables you have to use "ipv6.disable=1" as kernel-param to disable it really So sounds like this is just a side effect of not fully disabling ipv6, according to Harald in Comment #11. So NOTOURBUG at least :) If anyone can still reproduce with fedora 17 though, please reopen. libvirt-0.9.11.3-1.fc17.x86_64 works fine under Fedora 17 with IPv6 disabled in the way suggested by Harald Reindl. |
Created attachment 503286 [details] /var/log/rpmpkgs (log of installed packages) Description of problem: I tried to create a NAT virtual network in virtual-manager and got this error "Error creating virtual network: cannot create bridge 'virbr1': Package not installed". The details are: Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/createnet.py", line 351, in finish self.conn.create_network(xml) File "/usr/share/virt-manager/virtManager/connection.py", line 743, in create_network net.create() File "/usr/lib64/python2.7/site-packages/libvirt.py", line 935, in create if ret == -1: raise libvirtError ('virNetworkCreate() failed', net=self) libvirtError: cannot create bridge 'virbr1': Package not installed Version-Release number of selected component (if applicable): virt-manager-0.8.7-4.fc15.noarch libvirt-0.8.8-4.fc15.x86_64.rpm libvirt-client-0.8.8-4.fc15.x86_64.rpm libvirt-python-0.8.8-4.fc15.x86_64.rpm How reproducible: At least one time Steps to Reproduce: 1. Start virt-manager. 2. Connect to localhost. 3. Add a NAT network without DHCP (I use my own ISC DHCP & BIND servers): - Summary: Nework name: network1 - IPv4 network: Network: 192.168.123.0/24 ... - DHCP: Status: Disabled - Forwarding: Connectivity: NAT Actual results: "Error creating virtual network" Expected results: The network should be created. Additional info: I think that a dependency is missing.