bridged networking is not working

[Peter]

I've configured bridged networking for windows XP SP3 guest on eth0 interface of my PC. Now, I've set 192.168.56.103/24 - for windows and 192.168.56.35/24 for linux (manually, no dhcp because dhcp is not working too, I see requests but no answers from host) but still I'm unable to ping neither from windows linux, neither from linux windows. Attaching tcpdump shows different pictures in this both cases:

If I ping from windows linux host I do see arp requests like:

10:11:11.332662 ARP, Request who-has 192.168.56.35 tell 192.168.56.103, length 46

If I ping from linux windows I see NO packets - they are missed in limbo.

As for networking setup on host, here it is:

peter@tablet ~ $ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,PROMISC,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
    link/ether 00:1d:72:8c:4e:ff brd ff:ff:ff:ff:ff:ff
    inet 192.168.56.35/24 brd 192.168.56.255 scope global eth0
3: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN qlen 1000
    link/ether 00:1f:3b:35:50:29 brd ff:ff:ff:ff:ff:ff
4: vboxnet0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
    link/ether 0a:00:27:00:00:00 brd ff:ff:ff:ff:ff:ff
5: usb0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000
    link/ether 0e:37:f3:70:e4:9b brd ff:ff:ff:ff:ff:ff
    inet6 fe80::c37:f3ff:fe70:e49b/64 scope link 
       valid_lft forever preferred_lft forever
6: ppp0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 3
    link/ppp 
    inet 10.205.52.219 peer 10.6.6.6/32 scope global ppp0
peter@tablet ~ $ ip route
10.6.6.6 dev ppp0  proto kernel  scope link  src 10.205.52.219 
192.168.56.0/24 dev eth0  proto kernel  scope link  src 192.168.56.35 
127.0.0.0/8 via 127.0.0.1 dev lo 
default via 10.6.6.6 dev ppp0

eth0 is the following controller:

00:19.0 Ethernet controller: Intel Corporation 82566MM Gigabit Network Connection (rev 03)

[Peter]

VBox.log