PV Bridged DHCP (domU) Not working on Xen 4.5rc1 arm64

PV Bridged DHCP (domU) Not working on Xen 4.5rc1 arm64

[Jaggi, Manish]

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Hi All,


I am running ubuntu-trusty arm64 server image as dom0. I have enabled CONFIG_BRIDGE, CONFIG_IPV6, CONFIG_NETFILTER in linux 3.18. Xen version is 4.5 rc1.


in Dom0 post boot did the following


a) brctl addbr xenbr0;

b) brctl addif xenbr0 eth0

c) Updated /etc/sysctl.conf

net.bridge.bridge-nf-call-ip6tables = 0
net.bridge.bridge-nf-call-iptables = 0
net.bridge.bridge-nf-call-arptables = 0

d)

iptables -I FORWARD -m physdev --physdev-is-bridged -j ACCEPT


e) sysctl -p /etc/sysctl.conf
f) /etc/init.d/networking restart
g) dhclient xenbr0

xenbr0 gets an IP.

h)vif = [ 'bridge=xenbr0' ]. Started domU
g) domU got an ip.

Now the problem is domU is able to ping dom0 but not any other host. While dom0 is able to ping any host.


There could be something missing in my steps, can you please help

-Regards
manish

?






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Re: PV Bridged DHCP (domU) Not working on Xen 4.5rc1 arm64

[Ian Campbell]

On Thu, 2015-01-22 at 13:12 +0000, Jaggi, Manish wrote:
> a) brctl addbr xenbr0; 
> b) brctl addif xenbr0 eth0

Please check
 http://wiki.xen.org/wiki/Network_Configuration_Examples_%28Xen_4.1%2B%29#Example_Debian-style_bridge_configuration_.28e.g._Debian.2C_Ubuntu.29
for the proper mechanism for achieving this under Debian/Ubuntu.

> Now the problem is domU is able to ping dom0 but not any other host.
> While dom0 is able to ping any host.

What does "brctl show" output while the guest is running?

What does your guest configuration look like?

Have you check for clues under /var/log? (esp the xen and libvirt
subdirs).

Ian.