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[Xen-users] help with xen networking on debian

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] help with xen networking on debian
From: pinunki <pinunki@xxxxxxxxx>
Date: Thu, 20 Apr 2006 10:57:01 +1200
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hi everyone,

i've managed to install xen on sid and sarge, using this useful howto:
http://www.debian-administration.org/articles/320

i've got my virtual machine to startup, but networking doesnt really work!

my setup is as follows:
i have a router/gateway 192.168.1.1
my base host (moya) is 192.168.1.4
my virtual server (test18) is 192.168.1.18

from the virtual server, i can ping the base host and from the base
host i can ping the server. however, when i try and ping the gateway,
or anywhere else from the vitual server i get:
"From 192.168.1.18 icmp_seq=1 Destination Host Unreachable"

i also tried installing on sid and got exactly the same problem. i'm
not trying to do any fancy networking, just to get it working "out of
the box" :)

here is some info from moya (base host):

/etc/network/interfaces
--------------------------------
hamish@moya:~$ cat /etc/network/interfaces
# This file describes the network in
terfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
        address 192.168.1.4
        netmask 255.255.255.0
        network 192.168.1.0
        broadcast 192.168.1.255
        gateway 192.168.1.1
        # dns-* options are implemented by the resolvconf package, if installed
        dns-nameservers 210.55.12.1


route
-------
moya:/home/hamish# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
localnet        *               255.255.255.0   U     0      0        0 eth0
default         192.168.1.1     0.0.0.0         UG    0      0        0 eth0


ifconfig
----------

moya:/home/hamish# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:13:72:FC:C0:66
          inet addr:192.168.1.4  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::213:72ff:fefc:c066/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2783 errors:0 dropped:0 overruns:0 frame:0
          TX packets:738 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:196151 (191.5 KiB)  TX bytes:70241 (68.5 KiB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:560 (560.0 b)  TX bytes:560 (560.0 b)

peth0     Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:2732 errors:0 dropped:0 overruns:0 frame:0
          TX packets:755 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:204077 (199.2 KiB)  TX bytes:76453 (74.6 KiB)
          Interrupt:16

vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:738 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2788 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:70241 (68.5 KiB)  TX bytes:196537 (191.9 KiB)

vif4.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:35 errors:0 dropped:0 overruns:0 frame:0
          TX packets:174 errors:0 dropped:140 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1638 (1.5 KiB)  TX bytes:10466 (10.2 KiB)

xenbr0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2246 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:107032 (104.5 KiB)  TX bytes:378 (378.0 b)


/etc/xen-tools/xen-tools.conf
-----------------------------------------
moya:/home/hamish# cat /etc/xen-tools/xen-tools.conf
#
# /etc/xen-tools/xen-tools.conf
#
#  Global configuration file for the scripts included with Xen-tools.
#
#  Values may be set here so they don't need to be used upon the
# command line.
#
#  e.g.  --hostname=bob  becomes 'hostname = bob'.
#        --fs=ext3       becomes 'fs = ext3'.
#
#
#


##
#  Output directory.  Images are stored beneath this directory, one
# subdirectory per hostname.
##
dir = /home/xen

##
# If you don't wish to use loopback images, stored beneath the directory
# specified above with 'dir' then you may give an LVM volume name
# instead:
#
##
# volume = xen-volume

##
#  Disk and Sizing options.
##
size   = 2Gb      # Disk image size.
memory = 128Mb    # Memory size
swap   = 128Mb    # Swap size
fs     = ext3     # use EXT3 filesystems
dist   = sarge    # Default distribution to install.



##
# Networking setup values.
##

#
# Uncomment these if you wish to use a static address via the --ip flag.
#
gateway   = 192.168.1.1
netmask   = 255.255.255.0
#
# Uncomment this if you wish the images to use DHCP
#
# dhcp = 1


##
# Misc options
##

#
# Uncomment the following line if you wish to disable the caching
# of downloaded .deb files.
#
# cache = no
#

#
# Uncomment the following line if you wish to interactively setup
# a new root password for images.
#
# passwd = 1

#
# Default kernel for the virtual servers
#
kernel = /boot/xen-linux-2.6.12.6-xen


#
# Default mirror for debootstrap
#
mirror = http://ftp.us.debian.org/debian/

#
#  Uncomment if you wish newly created images to boot automatically.
#

# boot = 1


command to create xen virtual server
-----------------------------------------------------

xen-create-image --ip=192.168.1.18 --hostname=test18


here is some info from the virtual server:

/etc/network/interfaces
--------------------------------
test18:~# cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
 address 192.168.1.18
 gateway 192.168.1.1
 netmask 255.255.255.0


route
-------
test18:~# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     *               255.255.255.0   U     0      0        0 eth0
default         192.168.1.1     0.0.0.0         UG    0      0        0 eth0


ifconfig
----------
test18:~# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:16:3E:7F:CB:D4
          inet addr:192.168.1.18  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::216:3eff:fe7f:cbd4/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:322 errors:0 dropped:0 overruns:0 frame:0
          TX packets:41 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:19958 (19.4 KiB)  TX bytes:1890 (1.8 KiB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:14 errors:0 dropped:0 overruns:0 frame:0
          TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1284 (1.2 KiB)  TX bytes:1284 (1.2 KiB)


any help on this would be much appreciated! :)

thanks,
hamish

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