hi everybody
I'm looking at my setup and got stuck
I have a box with two NICs on the same subnet, and another
box similar, also two NICs on one subnet, all four NICs are
on the same subnet.
Now, that second box has also a virtual NIC (libvirtd's
bridge route mode) and VMs guests are using it, traffic to
that virtual net is routed via 1st real NIC. This second box
dhcrelays to the first box(dhcpd).
I see box-dhcrelay forwards to box-dhcpd, I see box-dhcpd
receives and offers a lease but that VM guest does not get it.
I have policy routing manually set in place so both boxes
can ping each other all NICs. (including virtual NIC on the
box-dhcrelay)
Moreover, that VM guest can ping both boxes' all NICs when
its IP address is set to manual.
It's RHEL7 and I'm only trying IPv4.
I'm hoping some can rule out (or suggest what might be
broken in) libvirt/policy based routing.
I see those offers box-dhcpd makes are exactly for the
subnet of box-dhcrelay's virtual NIC/subnet.
It's a pickle. An expert's thought would be great to hear.
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