OpenVZ Forum - RDF feed
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items: Routing problem
items: Re: Routing problem

Routing problem
type: item
description: Hello all, I have two VMs (100, and 101) using venet networking. They can ping each other fine. There are no iptables rules on the host, or in either VM. forwarding is enabled on all 3 as well. One of the VMs (101) is running openvpn linking to a remote host. I can ping the remote host from the VM running openvpn. I need to be able to communicate from the other VM (100 - 10.0.0.1) through VM 101 ( 10.1.1.101) to the remote host ( 10.0.80.14) . I just can't make it do it. I've tried it just leaving the default routing on the VMs vm100 # ip route 192.0.2.1 dev venet0 scope link default via 192.0.2.1 dev venet0 (with of course a route for the remote host on VM 101) vm101 # ip route 192.0.2.1 dev venet0 scope link 10.0.80.12/30 dev tapremote proto kernel scope link src 10.0.80.13 default via 192.0.2.1 dev venet0 vm101 # ping 10.0.80.14 PING 10.0.80.14 (10.0.80.14) 56(84) bytes of data. 64 bytes from 10.0.80.14: icmp_seq=1 ttl=64 time=212 ms ^C --- 10.0.80.14 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 212.179/212.179/212.179/0.000 ms Running tcpdump -npi venet0 icmp on the host shows two entries per ping 22:00:41.844641 IP 10.1.1.1 > 10.0.80.14: ICMP echo request, id 40463, seq 6, length 64 22:00:41.844664 IP 192.168.2.100 > 10.1.1.1: ICMP redirect 10.0.80.14 to host 10.0.80.14, length 92 22:00:41.844670 IP 10.1.1.1 > 10.0.80.14: ICMP echo request, id 40463, seq 6, length 64 I've tried various things on the host - routing 10/8 via venet0, adding the address of 101 to the interface, and adding a route via that IP too. I'm guessing from the redirect from the host that there's some proc entry that I haven't checked, although I've gone over what I can find on openvz.org. Any ideas? Is this possible? Anyone else done it?
creator: caluml
date: 2010-05-07T21:08:53-00:00

Re: Routing problem
type: item
description: Hmm. I see this is a tricky one. Basically, I am trying to route from one VPS through another. Is it possible with OpenVZ?
creator: caluml
date: 2010-05-16T17:14:24-00:00

Re: Routing problem
type: item
description: Have you tried using non-bridged VETH interface for a VE? This would give you a "gateway" for each VE and all VE's would be able to reach each other.(routing is per interface on Node) I haven't done much with running VPN's in a container,as its just as easy to do it on the Node,and work from there. Create a couple of non-bridged test VE's,and see how it goes. I hope it gives you something to go on. P.s. I think somewhere back a ways in the forum,there was a thread similar to what you want do,but for the life of me,I can't remember as it was a side note to another inquiry.
creator: lars.bailey
date: 2010-05-17T02:50:22-00:00