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xen-users
Re: [Xen-users] Xen 3.1 networking questions
Ok at the moment I use NAT and i can connect to the internet, but I
always have to change the router. Xen starts a new vifx.0 interface
which is my domUs router. The IP changes every time. How to fix that???
here are my configs:
xend-config.sxp (dhcp does not work anyway):
(network-script 'network-nat dhcp=yes')
(vif-script vif-nat)
domU.cfg:
vif = [ 'ip=10.0.0.100' ]
ip = '10.0.0.100'
netmask = '255.0.0.0'
gateway = '10.0.0.1'
/etc/network/interfaces
auto eth0
#iface eth0 inet dhcp
iface eth0 inet static
address 10.0.0.100
#gateway 10.0.0.254
netmask 255.0.0.0
the gateway is then set by xen to 10.0.0.1 but i have to change it with:
route del default gw 10.0.0.1
and
route add default gw 10.0.x.xxx
while 10.0.x.xxx is the ip of dom0s vifx.0
strange....
Florian Engelmann schrieb:
I just found this guide:
http://de.xen-forum.net/viewtopic.php?t=479&highlight=1und1
But it is not working for me. I searched now 2 days but there is no
real documentation of networking in xen 3.1 out there. I would like to
enable NAT networking and dhcp on the privates LAN side. But I don't
know how to setup xen-NAT at all and how to enable xen-dhcp. Isn't
there any documentation? Is xen open source still in development or
stopped it after citrix bought xensource?
Florian Engelmann schrieb:
Hi,
after hours of testing my last hope is the mailinglist. I have got a
root server (www.1und1.com) and I just installed debian etch amd64 on
it. I maanged to compile xen 3.1 from source and also my 1st HVM
virtual guest is running fine (Windows 2003). But 1und1 uses a
absolut strange network setup I have never seen before and I do not
understand why it is working at all!?!
These are the settings the root Sever is getting with DHCP (and they
are working...):
ifconfig:
eth0 Link encap:Ethernet HWaddr 00:19:99:0D:CD:05
inet addr:87.106.189.xxx Bcast:87.106.189.203
Mask:255.255.255.255
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:15579 errors:0 dropped:0 overruns:0 frame:0
TX packets:15257 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1026640 (1002.5 KiB) TX bytes:5709824 (5.4 MiB)
Interrupt:16 Base address:0x6000
route -n:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref
Use Iface
10.255.255.1 0.0.0.0 255.255.255.255 UH 0 0
0 eth0
10.0.0.0 0.0.0.0 255.0.0.0 U 0 0
0 eth0
0.0.0.0 10.255.255.1 0.0.0.0 UG 0 0
0 eth0
the route is also set with dhcp but after updating from sarge to etch
i had to use a trick to set the route because dhcp3 did no more use
the modified (by 1und1) dhcp script.
So this is my /etc/network/interfaces:
auto lo eth0
iface lo inet loopback
iface eth0 inet dhcp
up ip route add 10.255.255.1/32 dev eth0
up ip route add default via 10.255.255.1
auto eth0:0
iface eth0:0 inet static
address 87.106.189.xxx
netmask 255.255.255.255
broadcast 87.106.189.xxx
# xxx = always the same number (yes ip and broadcast are equal...)
I am abolute no network specialist but I never thought a netmask of
255.255.255.255 is valid and a client can communicate without a
reachable gateway... but it works...
I installed my 1st HVM guest and tried to setup networking. Bridging
does not work because windows does not allow those strange network
settings, so I think NAT would be the solution, wouldn't it? But I
did not find any documentation about how to setup NAT with Xen 3.1.
What IP do I have to setup at my dom0?
Can I use eth0:x to set it up?
Do I have to add any IP settings to my guest config:
vif = [ 'type=ioemu, bridge=xenbr0' ] ?
Should I use DHCP on the private LAN or static IPs?
Can I use a 192.168.x.x network or do I have to use 10.x.x.x (I red
about it)?
Do you have any good links about NAT and Xen 3.1?
Many thanks for your help!
Greetings Florian
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Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users
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Xen-users mailing list
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http://lists.xensource.com/xen-users
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