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1436245616 J * Guy- ~korn@elan.rulez.org
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1436248303 N * Bertl_zZ Bertl
1436248304 M * Bertl morning folks!
1436249999 Q * Guy- Ping timeout: 480 seconds
1436250540 J * Guy- ~korn@elan.rulez.org
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1436252224 J * Ghislain ~aqueos@adsl1.aqueos.com
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1436258683 J * Sirenia ~sirenia@93.186.164.51
1436260126 J * wicope ~wicope@0001fd8a.user.oftc.net
1436263301 J * CcxCZ ~ccxCZ@asterix.te2000.cz
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1436276664 J * Gremble ~Gremble@cpc29-aztw22-2-0-cust128.18-1.cable.virginm.net
1436279773 M * Bertl off for a nap ... bbl
1436279783 N * Bertl Bertl_oO
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1436285594 J * bonbons ~bonbons@2001:a18:20b:5d01:84c5:66db:e2a2:2fd5
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1436292141 J * derjohn_mob ~aj@fw.gkh-setu.de
1436292531 J * Hurga nobody@000131c9.user.oftc.net
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1436293678 M * Hurga Hi, I have a little problem with ipv6 guests...
1436293682 M * Hurga root@eurofur:~# ping6 ::1
1436293684 M * Hurga connect: Cannot assign requested address
1436293706 M * Hurga Is there something I can do about it?
1436295285 Q * Gremble Quit: I Leave
1436296088 N * Bertl_oO Bertl
1436296092 M * Bertl back now ...
1436296142 M * Bertl Hurga: looks like some address cannot be assigned, so check with strace what your ping6 is trying to do
1436296320 M * Hurga Bertl: Well, the problem is that there is no ipv6 address on the loopback interface. 
1436296330 M * Hurga ipv6 in general works fine...
1436296519 J * Aiken ~Aiken@d63f.h.jbmb.net
1436297329 M * Hurga Bertl: So is there some way to enable ipv6 on lo?
1436297880 M * Bertl you can assign any IPv6 IP to lo, and lo will show up inside the guest
1436297906 M * Bertl (i.e. assign it to the guest and add it to lo)
1436297937 M * Hurga oh, so I have to do it manually? Didn't expect that
1436297961 M * Hurga since ipv4 lo worked ootb.
1436298063 M * Hurga I guess that means no loopback isolation vor ipv6?
1436298069 M * Hurga *for
1436298262 M * Bertl nothing final there, correct
1436298448 M * Hurga a pity. - Anything I can do to speed things up? Testing, donations?
1436298604 M * Bertl both would be appreciated, but the main problem is that I'm still on IPv4 and it is very unlikely that I will switch in the near future, so the IPv6 details are rather abstract for me, which of course affects the patches
1436298676 M * Bertl i.e. it would require somebody with deep and detailed IPv6 knowledge to get the concepts right, the "mapping" itself was already done some time ago
1436298724 M * Hurga I do networking, but can't code.
1436298817 M * Bertl well, you know how the IPv4 isolation works?
1436299039 M * Hurga Just roughly, it's been a few years... I seem to remember that you assign some private address and map it to 127.0.0.1 inside the guest.
1436299317 M * Bertl correct, each guests gets a unique 127.x.y.1 address assigned
1436299355 M * Bertl networking takes care of the proper isolation and the "mapping" to and from those IPs to 127.0.0.1 adds the necessary virtualization sugar
1436299399 M * Bertl the basic idea back then was to use the IPv4 "mapped" addresses for 127.x.y.1 in IPv6 for this purpose, and handle them similar to IPv4
1436299432 M * Hurga sounds reasonable.
1436299445 M * Bertl but for whatever reason, that didn't work as expected
1436299608 M * Hurga so that would need debugging... is the code still there?
1436299687 M * Bertl not part of recent patches
1436300023 M * Hurga ah, unfortunate
1436300100 M * Bertl the patches were against 3.2.5, so no too much should have changed since
1436300136 M * Bertl of course, some adaptation will be required
1436300312 A * Hurga nods
1436300363 M * Hurga tomcat / java doesn't seem to play nicely with ipv6... even after I assigned ::1  to lo inside the quest.
1436300367 M * Hurga *guest
1436301285 M * Bertl strace -fF is probably a good start to figure out what's going wrong
1436304101 M * Hurga very weird effects
1436304382 Q * bonbons Quit: Leaving
1436306448 M * Hurga Bertl: might be interesting... I get the impression there are still some localhost mapping issues left
1436306457 M * Hurga here's what happened. I had a vserver guest with two ipv4 IPs, one of which was unused and which I wanted to get rid of.
1436306463 M * Hurga At the same time I wanted to use ipv6. That gave me some problems but that's not important right now.
1436306469 M * Hurga With two ipv4 IPs active mysql -h 127.0.0.1  and mysql -h localhost both worked.
1436306474 M * Hurga With one ipv4 IP active mysql -h 127.0.0.1 stopped working. mysql -h localhost still worked.
1436306481 M * Hurga Telling from the error messages, mysql mapped 127.0.0.1 to localhost with two IPs, and to the server hostname (rDNS of the ipv4 IP, also in hosts) with one IP.
1436306501 M * Hurga Mapped to the server hostname, the login was not valid.
1436306551 M * Bertl you are most likely hitting the single IP special casing
1436306577 M * Hurga hmm, could be... I think mysql needed that
1436306592 M * Bertl it can be enabled as "default" in the kernel config, which will apply it whenever there is only one IP assigned to the guest
1436306623 M * Bertl you can disable it in the config though
1436306677 M * Hurga CONFIG_VSERVER_AUTO_SINGLE=y
1436306684 M * Hurga meh.
1436306685 M * Bertl yup, that's it :)
1436306726 M * Hurga I don't remember what exactly it did... 
1436306769 M * Bertl basically if you have a single guest IP, everything outgoing is using that IP, i.e. every request is remapped to that single IP at bind time
1436306790 M * Bertl (avoiding the guest IP set check in the future)
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1436309027 J * CcxCZ ~ccxCZ@asterix.te2000.cz
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1436313559 Q * fstd Remote host closed the connection
1436313571 J * fstd ~fstd@xdsl-87-78-181-71.netcologne.de