Hi. First of all thank you for the work you are doing with libvirt.
I am not sure this is the right place to ask, I'd appreciate
if you can give me any hint or directions.
I have several similar KVM Linux boxes and one of them has a really
strange behavior with the KVM NAT: It just suddenly stops from
working.
This is a Linux Ubuntu Server 19.04 with
- libvirt-bin 4.0.0
- qemu-kvm 1:2.11
Everything works fine and then suddenly the virtual machines
can't reach outside. If I run a tcpdump in the host I see
the NAT isn't working.
When the server just boots I can see the packets with the
server address going out:
x.y.z.w.49138 > 8.8.8.8.53
Then, it may be some hours or days later, instead the server
address I see the internal domains address:
192.168.122.33.19132 > 8.8.8.8.53
^^^^^^^^^^^^^^
I try to restart the iptables but it won't help.
Any hints ? Thank you very much
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