[Vserver] Re: IPV6 and VSERVER ?

From: HongDan <hongdanstar_at_gmail.com> Date: Tue 30 May 2006 - 08:42:24 BST Message-ID: <000201c683bc$a5a56c90$1418423b@deepinb6b12523> · > Few days ago I've tested freevps o a debian with 2.6 kernel ...

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Message: 6
Date: Fri, 26 May 2006 12:49:53 -0400
From: Andrew Schulman <andrex@alumni.utexas.net>
Subject: [Vserver] Re: About the tcp/ip stack ...
To: vserver@list.linux-vserver.org
Message-ID: <n9ce72daok6nh9br77f3poernjb1oipi8h@4ax.com>
Content-Type: text/plain; charset=us-ascii
> > > "I don`t try this but it`s can be don`t work with FreeVPS.
> > > dhcpd use bpf for get requests, but bpf level very poor virtualizated
at
> > > FreeVPS.
> > > I have plan to rewrite vnetdev module for use L2 address for separate
> > > packets between contexts and ability use any vps as default gateway
for
> > > all other, but it`s not for 1.5 branch.
> > > At current time separate packets between contexts work with L3
addresses
> > > (IPv4/v6)."
> > 
> > Sorry if this is OT for this list, but let me see if I understand:  are
you
> > saying that FreeVPS' virtual network interfaces isolate TCP traffic, but
not
> > UDP?  And therefore dhcpd won't run in a FreeVPS VPS?  Can this really
be
> > true?  I can't find any other mention of it, and
> > http://www.freevps.com/tracker.html says that FreeVPS has "private udp
> > socket lists".
> > 
> > If this is true it's very bad for FreeVPS.
> 
> Although dhcp packets use UDP, they're very weird UDP packets because the
> client doesn't necessarily have an IP address at the time it needs to
> receive them.  Thus, dhcpd uses a different socket layer than normal
> UDP/TCP, which I gather from the above is not divided between contexts in
> freevps.
Aren't they just broadcast packets, sent to 255.255.255.255 on port 67/udp?
Anyway, this is OT here so I'll pursue it on the FreeVPS lists.  Thanks,
Andrew.
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Message: 7
Date: Fri, 26 May 2006 19:09:27 +0530
From: markandeya <markandeya@sriaurobindoashram.com>
Subject: [Vserver] guest o/s on vserver
To: vserver@list.linux-vserver.org
Message-ID: <1148650767.6164.6.camel@A6Mandrake>
Content-Type: text/plain
Dear Friends,
I would like to install numerous flavours of Linux on one machine using
vserver. Thus i can have one o/s as host like centos or Mandriva and
then run Suse, Ubuntu, Fedora, gentoo, etc. as guest virtual servers.
How does one install these guests? ARe there images so less disk space
is used for installation and shared files(kernal) need not be
duplicated? 
Sorry, this is mentioned in other documentation but i could not find an
indepth or step by step method/explanation. Please any help or
explanation or reference to a documentation source. Thank you so much.
Markandeya 
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Message: 8
Date: Sat, 27 May 2006 09:13:38 +0300
From: Alex Lyashkov <shadow@psoft.net>
Subject: Re: [Vserver] Re: About the tcp/ip stack ...
To: "vserver@list.linux-vserver.org" <vserver@list.linux-vserver.org>
Message-ID: <1148710418.3253.7.camel@berloga.shadowland>
Content-Type: text/plain
> > 
> > Although dhcp packets use UDP, they're very weird UDP packets because
the
> > client doesn't necessarily have an IP address at the time it needs to
> > receive them.  Thus, dhcpd uses a different socket layer than normal
> > UDP/TCP, which I gather from the above is not divided between contexts
in
> > freevps.
> 
> Aren't they just broadcast packets, sent to 255.255.255.255 on port
67/udp?
> Anyway, this is OT here so I'll pursue it on the FreeVPS lists.  Thanks,
> Andrew.
> 
dhcpd don`t use udp sockets. dhcpd use raw socket and receive packets
via bpfX device. It`s one one reason who dhcpd don`t work with later
versions FreeVPS, but now i release patch to fix it and use L2 address
to inter context routing. 
 
-- 
FreeVPS Developers Team  http://www.freevps.com
Positive Software        http://www.psoft.net
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