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I have the following Xen setup with -current:
Now, pf is set up as follows on Dom0:
pass out on bnx0 all
pass in on bnx0 all
pass out on bnx1 all
pass in on bnx1 all
pass in quick on xvif1.0 route-to (bnx0 192.168.21.113) all
pass in quick on xvif2.0 route-to (bnx0 192.168.21.113) all
This is to forward any packets between DomU1 and DomU2 via an external
machine at 192.168.21.113. The software on that machine inspects the packet
returns it unchanged to Dom0.
Now, I have verified with trcpdump that an ICMP echo request from DomU2 to
DomU1 (10.0.2.2 to 10.0.1.2) passes through xvif2.0, then bnx0, arrives at the
external machine and arrives back at bnx0 unchanged. I expect it to be
routed to 10.0.1.2 via xvif1.0 (Dom0 is configured as a gateway). Instead,
I see a routing loop as the request packet is sent back to the external
machine from bnx0. No static routes are configured.
Any pointers much appreciated.
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