HVM bridge not working any more

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Hi,
I am using xen on F7. My guest config looks like this:
*********************************************
kernel = "/usr/lib/xen/boot/hvmloader"
builder='hvm'
memory = 512
name = "scp231"
vcpus=2
pae=1
acpi=1
vif = [ 'type=ioemu, bridge=virbr0' ]
dhcp="off"
disk = [ 'phy:/dev/aida/scp-231,hda,w', ',hdc:cdrom,r' ]
device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
boot="cda"
vnc=1
vncdisplay=1
vncpasswd=''
stdvga=0
serial='pty'
localtime=1
*********************************************
[root@csli9 ~]# /etc/xen/scripts/network-bridge status
============================================================
8: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
   link/ether 00:30:48:31:97:49 brd ff:ff:ff:ff:ff:ff
   inet 172.16.1.37/16 brd 172.16.255.255 scope global eth2
   inet6 fe80::230:48ff:fe31:9749/64 scope link
      valid_lft forever preferred_lft forever
8: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
   link/ether 00:30:48:31:97:49 brd ff:ff:ff:ff:ff:ff
   inet 172.16.1.37/16 brd 172.16.255.255 scope global eth2
   inet6 fe80::230:48ff:fe31:9749/64 scope link
      valid_lft forever preferred_lft forever

bridge name     bridge id               STP enabled     interfaces
eth2            8000.003048319749       no              peth2
virbr0          8000.3a7b564bbcda       no              tap0
                                                       vif1.0

192.168.122.0/24 dev virbr0  proto kernel  scope link  src 192.168.122.1
172.16.0.0/16 dev eth2  proto kernel  scope link  src 172.16.1.37
default via 172.16.1.16 dev eth2

Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
172.16.0.0      0.0.0.0         255.255.0.0     U     0      0        0 eth2
0.0.0.0         172.16.1.16     0.0.0.0         UG    0      0        0 eth2
============================================================


[root@csli9 ~]# ifconfig
eth2      Link encap:Ethernet  HWaddr 00:30:48:31:97:49
         inet addr:172.16.1.37  Bcast:172.16.255.255  Mask:255.255.0.0
         inet6 addr: fe80::230:48ff:fe31:9749/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:15230 errors:0 dropped:0 overruns:0 frame:0
         TX packets:3692 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:0
         RX bytes:897539 (876.5 KiB)  TX bytes:2761958 (2.6 MiB)

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:6171 errors:0 dropped:0 overruns:0 frame:0
         TX packets:6171 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:0
         RX bytes:51022608 (48.6 MiB)  TX bytes:51022608 (48.6 MiB)

peth2     Link encap:Ethernet  HWaddr 00:30:48:31:97:49
         inet6 addr: fe80::230:48ff:fe31:9749/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:240988 errors:0 dropped:0 overruns:0 frame:0
         TX packets:3730 errors:0 dropped:0 overruns:0 carrier:0
         collisions:539 txqueuelen:100
         RX bytes:65841255 (62.7 MiB)  TX bytes:2780370 (2.6 MiB)
         Base address:0x4020 Memory:d8420000-d8440000

tap0      Link encap:Ethernet  HWaddr 3A:7B:56:4B:BC:DA
         inet6 addr: fe80::387b:56ff:fe4b:bcda/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:110 errors:0 dropped:0 overruns:0 frame:0
         TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:500
         RX bytes:7544 (7.3 KiB)  TX bytes:510 (510.0 b)

vif1.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
         UP BROADCAST MULTICAST  MTU:1500  Metric:1
         RX packets:0 errors:0 dropped:0 overruns:0 frame:0
         TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:32
         RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

virbr0    Link encap:Ethernet  HWaddr 3A:7B:56:4B:BC:DA
         inet addr:192.168.122.1  Bcast:192.168.122.255  Mask:255.255.255.0
         inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:110 errors:0 dropped:0 overruns:0 frame:0
         TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:0
         RX bytes:6004 (5.8 KiB)  TX bytes:510 (510.0 b)


I would like to use the guest within the subnet of eth2, so 172.16.0.0 . But it doesn't work for any reason? It looks like, that I only can use a 192.168.122.X address in the guest. Any glue how to bridge the interface to be able access the 172.16.0.0 network directly?

Regards Jonas

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