Some IPv6 related issues

[benjamreis]

• When connecting a new host to XO, if the management interface is in IPv6, it is required to add extra [] arount the IPv6 address so that the HTTP(S) URL created from it is valid. I think from a user POV, the extra [] should be added by XO since a user doesn't know when the address is used to create a URL. Ideally, if a user add the [] XO should let as is, and add them if not.

• The console address provided by the XAPI is wrong when the management interface is in IPv6, the [] around the IPv6 are missing. It will be fixed in XAPI but meanwhile XO should rework the URL to add them.

• When displaying the addresses of an host in the network tab, only the host's PIFs' IPv4 are displayed. A pif can also have an IPv6 address in its IPv6 field, also when a PIF primary_address_type is IPv6 the IPv6 address should be displayed first.

[julien-f]

1. Not possible because a port can be specified by :<port>
2. Do you have an example?
3. ping @pdonias

[benjamreis]

Answer to point2:

# xe console-param-list uuid=b5182380-6605-2162-9688-db1f1bb60678 
uuid ( RO)             : b5182380-6605-2162-9688-db1f1bb60678
          vm-uuid ( RO): f45a6608-1ec2-4da7-808c-5104bac657cd
    vm-name-label ( RO): Control domain on host: localhost.localdomain
         protocol ( RO): RFB
         location ( RO): https://::1/console?ref=OpaqueRef:19f301f1-b4c8-42d4-b9f2-3a7dc3a20242
     other-config (MRW): 

The location field should be: https://[::1]/console?ref=OpaqueRef:19f301f1-b4c8-42d4-b9f2-3a7dc3a20242

This an issue in XAPI, but it can be worked around in XO, it means there's no console available for host in IPv6 only network.

[julien-f]

2. Curious to see a console address be localhost, XO would not be able to connect to it.
   Unless it becomes a real problem, I don't think we should take care of this for now, it appears difficult to get right.

[olivierlambert]

For 1, maybe the UI can added them directly if there's no port specified. Is that doable?

[benjamreis]

I edited the address, because my address is on public ipv6. :)

[julien-f]

For 1, maybe the UI can added them directly if there's no port specified. Is that doable?

Nope because, AFAIK, there is no easy way to tell if there is a port or not.

[olivierlambert]

In terms of UI, then I think we should then have a selector at some point, if we are "talking" in IPv4 or v6, so we can pre-position (or add) the brackets automatically, because it's not common at all for people not used to this.

I'll try to find how other software are dealing with this in terms of UI.

[pdonias]

3. Ok, we can change that. So the IP field of a PIF always contains an IPv4, right? And why is the IPv6 field a list of IPs? Can a PIF have more than one IPv6, somehow?

[benjamreis]

IPv6 field is always a list of IPv6 addresses (potentially empty).
primary_address_type is either equal to IPv4 or IPv6 to indicate which addresses are used by XAPI.

A PIF, and a VIF or even a physical interface can have mutlipe IPv4s and IPv6s at the same time, but it's VERY VERY RARE. Most of the time there's only one IP address by interface.
IMHO taking the first entry is enough.

[benjamreis]

Quick update:
1 - impossible => perhaps a tips in UI or a clearer message error when attempting to use an IPv6 address withou []?
2 - The fix has been merged in XAPI, it'll be available in CH8.3 and XCP-ng8.3, we'll wait for the fix.

[olivierlambert]

What's the status of this?

[pdonias]

3. I don't know if we want it for XO 5 but it should be trivial

[olivierlambert]

Let's go with 3. first then :)

[marcungeschikts]

For now the wekan card is in Nice to have of XO6 swimlane in charteing board

[olivierlambert]

Okay we probably want it for XO 5 and before the end of the year (since it's trivial and 8.3 will be here at the same time)