WinXP in QEMU <- VDE switch -> dnsmasq

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I have several virtual machines running in QEMU with kvm support. The machines are connected to VDE switch, which is part of the LAN bridge on my system, there is dnsmasq running, and VMs like fedora or debian have no problems accessing NFS server on my computer and freely update themselves via internet, since routing is done on the host. The problem machine is Windows XP which I cannot integrate into the network completely.

IPv4 are automatically given from the dnsmasq which is bound to the LAN bridge: br0. WinXP has a Red Hat VirtIO Ethernet Adaptor, with drivers installed from the iso image, Windows has no complaints about the device. When I start this VM, it starts to acquire IP and does it for several minutes. Finally it gets IPv4 from the dnsmasq, the IP address, the DNS server, the subnet mask are all correct and cannot be mistaken for some default setting. On the Gentoo I see the IPv4 assigned and the host being assigned the name. It looks like it works, but I cannot open any page on the internet, I cannot ping even the gateway. When I try to traceroute WinXP IP local address from my Gentoo, traceroute gives thirty asterisks then exits. Whatever’s happening it’s beyond I can comprehend.

Here are the settings:

Command running the VM:

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An attempt to change the networking device settings from vde to usual virtio