Bug#398011: linux-image-2.6.18-2-xen-k7: DomU network dies during nmap scan

["Rafael D" <raf@noduck.net>]

Package: linux-image-2.6.18-2-xen-k7
Version: 2.6.18-4
Severity: important

The network of a 2.6.18-2 domU image stops working during an nmap SYN
scan (nmap -sS). Using tcpdump on dom0 I can see the packet going to the
vif, however it never arrives in domU.

When I do the same thing using a 2.6.18-1 domU there are no problems (it
keeps working).

Both domU images were running on a 2.6.18-2 dom0. Nothing suspicious in
dmesg.

-- System Information:
Debian Release: 4.0
  APT prefers testing
  APT policy: (500, 'testing'), (101, 'unstable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-2-xen-k7
Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1)

Versions of packages linux-image-2.6.18-2-xen-k7 depends on:
ii  initramfs-tools               0.85a      tools for generating an initramfs
ii  linux-modules-2.6.18-2-xen-k7 2.6.18-4   Linux 2.6.18 modules on AMD K7

Versions of packages linux-image-2.6.18-2-xen-k7 recommends:
ii  libc6-xen                    2.3.6.ds1-7 GNU C Library: Shared libraries [X

-- no debconf information