Yes,I see that peer disappeared in XML,but works on first start...
Also I agree that address more for guest side and not host,do you have some suggestions for me how to fix that before release?
25 Апр 2016 г. 8:57 PM пользователь "Laine Stump" <laine@xxxxxxxxx> написал:
I haven't had the time to fix it yet, but wanted to point out that the patches that are supposed to support setting the peer address of tap/macvlan devices do not work. The problem is that the peer attribute isn't being included when the XML for a a domain interface is being formatted.
I also sent the following message last week as a followup to the patch series; possibly it wasn't noticed for that reason:.
I'll make a patch to fix the formatting when I can so that I can test my theory about address vs. peer on lxc vs qemu. But if it's fixed by someone else in the meantime, all the better :-)
On 04/20/2016 12:36 PM, Laine Stump wrote:
Something I've found myself worrying about lately while driving in the car or nodding off to sleep - are the "address" and "peer" attributes effectively used in the same way for all network connection types and both hypervisors? I think the answer may be "no", and if so we need to fix that before they go out in a release.
In particular, when an lxc domain's interface has:
<ip address='192.168.128.1'/>
That is the IP address seen by the guest, not the host. So I would assume that if an LXC domain had:
<ip address='192.168.128.1' peer='192.168.128.2'/>
that 192.168.128.1 would still be the IP address see by the guest, and 192.168.128.2 would be the IP address on the host side; and it should be the same for qemu.
>From what I can see of the code, though, on a qemu domain, the IP address is set for the tap device's own IP, meaning that it would show up on the *host* side, while the peer address would be what the host expects to be at the other end of the tap device (i.e. the guest side), so the two attributes are used for the *opposite* end of the PTP link in lxc vs. qemu.
I think that, instead, the "address" attribute should *always* be the IP address that is seen/used by the guest, and the "peer" attribute should be the IP address that is seen/used by the host. (perhaps "peer" could be replaced with some other name, like "host" or "hostAddress" to avoid confusion? (don't like either of those alternatives, but I don't really like peer either)).
Aside from that, I can see that these patches have been pushed in the code that I'm running, and I've been trying to add "peer='blah'" to interface IP addresses on my test machine, but it's just removed from the config. Have you tested what got pushed? Has something gone wrong?
Since there hasn't been a release with these patches included yet, there is still time to fix it at least to be consistent (assuming that my suspicions are correct; I've been unable to test it myself for the reason above).
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