search for: virbr1

...ts: ----------------------------------------------------------------------------- tail -n1 -f </var/log/syslog | egrep -i "dhcpd|dnsmasq-dhcp" Sep 13 05:11:25 host dhcpd: DHCPDISCOVER from 52:54:00:72:f0:e2 via virbr0 Sep 13 05:11:25 host dhcpd: DHCPDISCOVER from 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:11:26 host dhcpd: DHCPOFFER on 192.168.122.194 to 52:54:00:72:f0:e2 via virbr0 Sep 13 05:11:26 host dhcpd: DHCPOFFER on 192.168.100.107 to 52:54:00:2a:e0:a6 via virbr1 Sep 13 05:11:27 host dhcpd: DHCPREQUEST for 192.168.122.194 (192.168.122.1) from 52:54:00:72:f0:e2 via virbr0 Sep 13 05:1...

I have CentOS 7 host. Two guests on bridge network setup by GUI and virt-manager. 1 CentOS 8 guest 1 Win 10 guest Both cannot access the host. They can other machines on the network. Guests can access the internet just not the host. I used virt-manager GUi to set up everything. Selected the eth0:macvtap and Bridge. I "desire" bridge network. If I select something else I get access to

Hi everyone. Those are the iptables forwarding rules associated with the two virtual networks on my machine: ----------------------------------------------------------------------------------------- -A FORWARD -d 192.168.100.0/24 -o virbr1 -m state --state RELATED,ESTABLISHED -j ACCEPT -A FORWARD -s 192.168.100.0/24 -i virbr1 -j ACCEPT -A FORWARD -i virbr1 -o virbr1 -j ACCEPT -A FORWARD -o virbr1 -j REJECT --reject-with icmp-port-unreachable -A FORWARD -i virbr1 -j REJECT --reject-with icmp-port-unreachable -A FORWARD -d 192.168.122...

...ests on the same network. Also that lines up with what's written above. >>> inbound. Deny all other outbound. >> [...] > >Thanks for reporting this. It's clearly a bug in libvirt. The rules >are in this order: > > all rules for virbr0 > all rules for virbr1 > all rules for virbr2 > >But what we should do instead is: > > input rules for all networks > local rules for all networks > output rules for all networks > reject rules for all networks > >The problem is that we do not know how other rules look like. So what &g...

Hi all, I have 3 guests (2-RHEL4 and 1 RHEL6) and have some issues regarding networking between them. The 2 RHEL4 system's use default bridge virbr0 and get ip's of range 192.168.122.0/24 (192.168.122.207, 192.168.122.167) I created another bridge (virbr1) with NAT forwarding (no dhcp). The network i choose was 192.168.100.0/24. And the third system (RHEL6) was assigned static ip-addres 192.168.100.101, >From the RHEL6 system which uses virbr1 is able to ping systems in 192.168.122.0/24 series , but guest systems in 192.168.122.0/24 are not abl...

...onnections='1'> <name>outsider</name> <uuid>247e380a-8795-466a-b94a-5be2d05267bb</uuid> <forward mode='nat'> <nat> <port start='1024' end='65535'/> </nat> </forward> <bridge name='virbr1' stp='on' delay='0'/> <mac address='52:54:00:7f:a1:fb'/> <domain name='outsider'/> <ip address='192.168.100.1' netmask='255.255.255.0'> <dhcp> <range start='192.168.100.2' end='192.168.100....

...aglia at polito.it; dev at openvswitch.org On Thu, Mar 22, 2012 at 11:11 AM, Daniele Milani <dano1988 at hotmail.it> wrote: I think I could try the first solution. Can you explain me how do I create the port used by dnsmasq? For example, is it correct to execute # ovs-vsctl add-port virbr1 port2 tag=2 to create a port for the vLan whose tag is 2 named "port2"? Try something like this: ovs-vsctl add-port virbr1 port2 tag=2 ovs-vsctl set Interface port2 type=internal ifconfig port2 10.0.0.1 ifconfig port2 up /usr/sbin/dnsmasq --strict-order --bind-interfaces --except-inte...

...ve. That is correct. > >>>> inbound. Deny all other outbound. >>> > > [...] > >> >> Thanks for reporting this. It's clearly a bug in libvirt. The rules >> are in this order: >> >> all rules for virbr0 >> all rules for virbr1 >> all rules for virbr2 >> >> But what we should do instead is: >> >> input rules for all networks >> local rules for all networks >> output rules for all networks >> reject rules for all networks That doesn't achieve the desired results (as...

...<name>outsider</name> > <uuid>247e380a-8795-466a-b94a-5be2d05267bb</uuid> > <forward mode='nat'> > <nat> > <port start='1024' end='65535'/> > </nat> > </forward> > <bridge name='virbr1' stp='on' delay='0'/> > <mac address='52:54:00:7f:a1:fb'/> > <domain name='outsider'/> > <ip address='192.168.100.1' netmask='255.255.255.0'> > <dhcp> > <range start='192.168.100.2' e...

Hi all, When I defined a network use the host bridge "virbr1" an error occurred : "libvir: error : Unable to create bridge virbr1: File exists" But how can I define this network use the host bridge "virbr1" ? <network> <name>def1</name> <bridge name='virbr1'/> <forward mode='nat'> <i...

...niele Milani <dano1988 at hotmail.it > <mailto:dano1988 at hotmail.it>> wrote: > > I think I could try the first solution. Can you explain me how do > I create the port used by dnsmasq? > > For example, is it correct to execute > # ovs-vsctl add-port virbr1 port2 tag=2 > to create a port for the vLan whose tag is 2 named "port2"? > > > Try something like this: > > ovs-vsctl add-port virbr1 port2 tag=2 > ovs-vsctl set Interface port2 type=internal > ifconfig port2 10.0.0.1 > ifconfig port2 up &gt...

Hi, I have some guests running in the "default" network (virbr0) and I've also created a similar (NAT) network (virbr1). Therefore, the FORWARD chain for the CentOS 6.4 host looks like this: http://fpaste.org/29229/75281379/ ...where line 3-7 are related to virbr0 and 8-12 to virbr1. My 2 questions: 1) I've noticed that I can ping from a guest within virbr0 to any guest on the virbr1 network. However, I ca...

...yes nat-internet active yes yes prd-private-lan active yes yes virsh net-info nat-internet Name: nat-internet UUID: 4cff86b1-8e63-40be-ac9c-d3dcd405a9d3 Active: yes Persistent: yes Autostart: yes Bridge: virbr1 virsh net-dumpxml nat-internet <network connections='5'> <name>nat-internet</name> <uuid>4cff86b1-8e63-40be-ac9c-d3dcd405a9d3</uuid> <forward dev='eth0' mode='nat'> <nat> <port start='1024' end='655...

Thanks for the info. brctl show virbr0 bridge name bridge id STP enabled interfaces virbr0 8000.525400fc34af yes virbr0-nic brctl show virbr1 bridge name bridge id STP enabled interfaces virbr1 8000.5254009c3902 yes virbr1-nic ip a s virbr0 3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000 link/ether 52:54:00:fc:34:af brd f...

Am 01.04.2020 um 21:56 schrieb Jerry Geis: > Thanks for the info. > > brctl show virbr0 > bridge name bridge id STP enabled interfaces > virbr0 8000.525400fc34af yes virbr0-nic > > brctl show virbr1 > bridge name bridge id STP enabled interfaces > virbr1 8000.5254009c3902 yes virbr1-nic Why is no VM started? > ip a s virbr0 > 3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state > DOWN group default q...

>Sorry, have to correct myself. Had to much to do today on OpenShift. >There is no Docker involved in what we discuss. The firewall rules for >the host bridge devices get created by libvirtd. Thanks I was using iptables and not converted to firewalld. I am doing so now. Will I need to delete the VM and re-add it ? I am rebooting first. Jerry

OK I rebooted. I changed the NIC from Bridge to Passthrough, hit apply, then changed it to bridge and hit apply, then booted the VM. My firewall looks better but still not working. iptables -L FORWARD -v -n | egrep '(policy|virbr1)' Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) 0 0 ACCEPT all -- eth0 virbr1 0.0.0.0/0 192.168.100.0/24 ctstate RELATED,ESTABLISHED 0 0 ACCEPT all -- virbr1 eth0 192.168.100.0/24 0.0.0.0/0 0 0 ACCEPT all -- virbr1 virbr1 0.0.0.0/0 0.0.0.0...

...o traffic between the other VMs is getting forwarded from the virtual interface to the "network appliance" VM. There is connectivity between the VMs on the private network and the "network appliance" VM which is acting as a gateway. Here's the output of the brctl command: virbr1 bridge id 8000.5254007e2f5b designated root 8000.5254007e2f5b root port 0 path cost 0 max age 19.99 bridge max age 19.99 hello time 1.99 bridge hel...

...ith the intent eventually of giving others access to the VM and not the host. Here is the xml file for the private network: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh net-edit virbr1 or other application using the libvirt API. --> <network> <name>virbr1</name> <uuid>####</uuid> <forward mode='nat'/> <bridge name='virbr1' stp='on' delay='0' /> <mac address='52:54:00:##:##:##'/>...

...39;, I see that the rules libvirt creates were inserted before the rules from /etc/sysconfig/iptables. Since the rules from libvirt include one that rejects any new connections, the data I want forwarded is dropped. For example, target prot opt in out source destination ACCEPT all -- any virbr1 anywhere 192.168.123.0/24 state RELATED,ESTABLISHED ACCEPT all -- virbr1 any 192.168.123.0/24 anywhere ACCEPT all -- virbr1 virbr1 anywhere anywhere REJECT all -- any virbr1 anywhere anywhere reject-with icmp-port-unreachable REJECT all -- virbr1 any anywhere anywhere reject...