similar to: host OS can't access internet but guest OS with bridge can

Hi, I am trying to fix a problem I have for about a week now. The environment is: --several independent servers with Centos5.4 on the latest patchlevel (example will be server2) All of them are working properly. --a machine with Xen installed to host some virtual machines (xenserver1) --domu servers on xenserver1 (crmserver1, winserver1) The whole network is connected with a Lancom router to a

I''m running Xen and created a virtual os called Domain-1. So now I have two systems, Domain-0(dom0) and Domain-1(dom1), both running fedora 8. I only have 1 ethernet device eth0. However, for some reason, my internet doesn''t work in Domain-1. My output for route -n on Domain-0 is: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref

I just did a fresh install of centos 5.0 from cd, followed by yum update which installed 399 packages. No failures or errors that I can see. I have three nics in the box, but am only setting up one at the moment. The box can ping others in my network, but if I try ssh, telnet, ftp, etc I get this: [root at cm network-scripts]# ftp watchdog ftp: connect: No route to host ftp> [root at cm

Hi, I'm using CentOS release 5.6 (Final) and Xen 3.1. I'm writing to ask how to configure port forwarding. With virt-manager 0.6.1 I added the machines, but there I don't see an option for port forwarding. I would like to reach the VM on a specific port of the host machine. Once the machinces are running, I can configure iptables so that the port forwarding works, but after

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 hi all, i have several flac files which have their comment tag filled up with... comments, as well as the other tags filled in with relevant information. and then i have some similar flac files, resulting from some audio processing on the original flac files, in a subdirectory, S, for example. i am using metaflac 1.2.1-1.2 on ubuntu 9.04 and i am

I would have to see a file sample to debug it. --- On Wed, 12/30/09, scar <scar at drigon.com> wrote: ... > and thus none of the tags are transferred.? i put an equals sign into > the comment and then metaflac doesn't complain anymore.? however, on the > files that it did not complain about there was no equals sign in the > comments.? so i am confused as to what is the real

Hi all, I wonder if someone can help me with this: The setup is as follows: 192.168.1.254 - wireless ADSL modem, with DHCP pool on 192.168.100 - 192.168.200 192.168.1.250 - Linux firewall RED interface 192.168.2.250 - Linux firewall GREEN interface. There are some normal LAN clients behind the Linux firewall's GREEN interface, which can all access each other's shared services and also

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 i am envisioning a scenario that a fellow sysadmin is employing using xen, where the host is configured with LVM. basically, one volume group spans the physical disk. then, various logical volumes are created for the host and (Linux) guest OSes. this makes it easy to resize logical volumes should it be needed. is a setup like this possible with

I have a CentOS 6.4 VM that is getting its DHCP information from dnsmasq (a libvirt instance). However, it is not applying the routing information. Attached is a tcpdump of the dhcpc output. You'll see: Default-Gateway Option 3, length 4: 192.168.122.1 However, when I run 'route -n', I get: # route -n Kernel IP routing table Destination Gateway Genmask

Has anyone ran into this issue before? 2 physical nics: eth0 hooked up to 10.175.8.0/21 eth1 hooked up to 10.150.8.0/24 Ifconfig -a looks like this: [root@mgixen1 ~]# ifconfig -a eth0 Link encap:Ethernet HWaddr 00:19:B9:F2:1B:C3 inet addr:10.175.8.158 Bcast:10.175.15.255 Mask:255.255.248.0 inet6 addr: fe80::219:b9ff:fef2:1bc3/64 Scope:Link UP

I have followed the nat advice from this guide: http://wiki.kartbuilding.net/index.php/Xen_Networking#Routed_Networking_with_NAT_2 I have googled internet for weeks and read almost every thread in this forum without getting a working NAT on my system. My main question is how exactly will the iptable rules with MASQUERADE or POSTROUTING look like if you want access to the internet from Dom U ,

Hello, On Ubuntu 9.04 (libvirt 0.6.1-0ubuntu5.1) I have 2 different network files: root at sauron:~# ls -l `locate default.xml` lrwxrwxrwx 1 root root 14 2010-02-13 12:34 /etc/libvirt/qemu/networks/autostart/default.xml -> ../default.xml -rw-r--r-- 1 root root 373 2010-03-01 00:02 /etc/libvirt/qemu/networks/default.xml -rw------- 1 root root 319 2010-03-01 00:04

On 12/16/2013 04:47 AM, Gao feng wrote: > On 12/14/2013 10:51 AM, scar wrote: >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA256 >> >> Gao feng @ 12/12/2013 10:18 PM: >>> I saw there are two bridge br0 and virbr0 in your host. which >>> bridge the libvirt uses? what's result of #virsh net-list ? >> well i don't quite understand bridges

HI again, This is the solution to my problem, hope it helps someone in the future. First of all, thanks to Ramachandran Radhakrishnan for helping me with this. The problem was my NIC: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01) What happens, is that the NIC''s driver sets the HWADRRESS = FE:FF:FF:FF:FF:FF, and that''s the same

$ dovecot -n # 1.1.11: /etc/dovecot/dovecot.conf # OS: Linux 2.6.28-11-server x86_64 Ubuntu 9.04 protocols: imap imaps managesieve I need to make an IMAP (actually imaps) server available over the Internet. Unfortunately, VPN is not available (not all clients support VPN), so I will have to expose the imaps port to the Internet. My question is: how reliable is Dovecot in such a setup? I am not

Okay, here''s the deal, (diagram below) I currently have 3 NIC''s configured in my Linux server. eth0 serving the home network eth2 Cable modem to internet ppp0 ADSL to internet (through eth1) Connections can be established from eth0 (192.168.0.0/255) and from eth2 (24.250.85.128/128). Because eth2 has the first default route. However, ppp0

Hello @all, thanks for all the helpfull answers in this mailing list. They helped me compiling a new kernel 2.6.10.11 with Xen 2.0.6 (my first one), setting up a dom0 with RAID, LVM and loop devices for domU, integrating a second network as xen-br1 (I''m calling the /etc/xen/scripts/network script from within /etc/init.d/xend to bring up / down the second bridge.) and bootstrapping

Hi there, I've installed a new KVM-Server. The routing in all instances are only working after "arp -s ip_of_router mac_of_router" Server: CentOS7, KVM Clients: CentOS6 and Fedora 21 What going wrong? [root at bgstkvmlr01 ~]# ifconfig bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST> mtu 1500 inet6 fe80::3ed9:2bff:fe0b:c706 prefixlen 64 scopeid

Hi, I''m trying to install xen with this configuration: dom0 -> Centos 5.3 dom1 -> Fedora 10 dom2 -> Fedora 10 Centos kernel = (2.6.18-128.1.10.el5.centos.plusxen) XEN Version = 3.0.3 I''m having some problems trying to install xen on my mychine, but i''ve been able to solve all of them but one: i can''t reach my gateway from

OK, I have a strange problem. It is probably something simple/stupid, but I cannot figure it out. I have a nice new PowerEdge T20 that I installed CentOS 6 (6.5) on with Virtualization (KVM). I then installed Ubuntu 14.04 in a virtual machine, with a bridged network: ------ begin ub140464.xml------------------ <domain type='kvm' id='2'>