Xen users - Feb 2008 - Bridge Network route Dom0 through a DomU?

Situation

peth0 = internet
peth1 = local private network

Dom0 is only configured to use peth1 and works fine as such

I have a DomU setup as a NAT box for the local network to the internet and
it is functioning as well.

DomU is also running a caching DNS and DHCP for the local network

The problem I have is DomO''s gateway is set to the local network IP of
the
DomU, as is resolv.conf''s dns entry

Dom0 resolves DNS, Dom0 can *ping* hosts on the internet (ie www.google.com),
but Dom0 doesn''t receive protocol traffic from the internet ... using
ssh or
w3m from Dom0 results in dead air.   I discovered this trying to build
another VM, the xen-tools process just hangs waiting for connection to the
mirror.

Can I do what I''m trying to do?   Any idea what I need to tweak?

Happy to provide whatever other config info would be useful.   Before you
ask,  I don''t enable the outside interface to Dom0 because I
don''t have
enough surplus public IP space to waste the address.

Thoughts, comments and faq pointers welcome ... I have tried searching here
and google, but haven''t really found a solution.

Thanks.


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