Hi, I have set up my Xen 3.0.2 on a 64 bit gentoo using bridging, because I want to have a seperate IP adress for each domU. I can send out tcp packets from my dom1, but I don''t get their reply. I can ping the dom0 from my dom1 and vice versa - no problem there. If I ping from my dom1 to an external internet adress, I can see (using tcpdump) the outgoing packets in the dom1:eth0, the xenbr0 and the response coming back to the xenbr0 (and my dom0:eth0), but no such packets in the dom1:eth0. If I ping the dom1 from the outside I can see the packets received by xenbr0, but not by the dom1:eth0. Any ideas ? thank you very much, Oliver Here my /etc/xen/base config file: kernel = "/boot/vmlinuz-xen-domU" memory = 512 name = "base" vcpus = 4 # make your domain a 4-way disk = [''phy:/dev/hda5,sda1,w'',''phy:/dev/hda6,sda2,w''] root = "/dev/sda1 ro" vif = [ ''bridge=xenbr0'' ] my /etc/xen/xend-config.sxp file: (xend-relocation-server yes) (xend-relocation-hosts-allow ''^localhost$'') (network-script network-bridge) (vif-script vif-bridge) (dom0-min-mem 196) (dom0-cpus 0) my dom0 network config: config_eth0=("85.14.220.63 netmask 255.255.248.0 brd 85.14.223.255") routes_eth0=("default via 85.14.216.1") my dom1 network config: config_eth0=("85.14.217.42 netmask 255.255.248.0 brd 85.14.223.255") routes_eth0=("default via 85.14.216.1") my .config file for the dom0 kernel | grep XEN | grep -v \#: CONFIG_X86_64_XEN=y CONFIG_X86_XEN_GENAPIC=y CONFIG_XEN_PCIDEV_FRONTEND=y CONFIG_XEN=y CONFIG_XEN_INTERFACE_VERSION=0x00030101 CONFIG_XEN_PRIVILEGED_GUEST=y CONFIG_XEN_PCIDEV_BACKEND=y CONFIG_XEN_PCIDEV_BACKEND_PASS=y CONFIG_XEN_BLKDEV_BACKEND=y CONFIG_XEN_NETDEV_BACKEND=y CONFIG_XEN_NETDEV_LOOPBACK=y CONFIG_XEN_SCRUB_PAGES=y CONFIG_XEN_DISABLE_SERIAL=y CONFIG_XEN_SYSFS=m my .config file for the domU kernel | grep XEN | grep -v \#: CONFIG_X86_64_XEN=y CONFIG_X86_XEN_GENAPIC=y CONFIG_XEN_PCIDEV_FRONTEND=y CONFIG_XEN=y CONFIG_XEN_INTERFACE_VERSION=0x00030101 CONFIG_XEN_UNPRIVILEGED_GUEST=y CONFIG_XEN_BLKDEV_FRONTEND=y CONFIG_XEN_NETDEV_FRONTEND=y CONFIG_XEN_SCRUB_PAGES=y CONFIG_XEN_DISABLE_SERIAL=y _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users