The first thing that jumped out at me was that zero packets are forwarded, 21 million packets not forwardable. But then I recalled you are using bridging rather than packet forwarding.
Then this really jumped out at me: Twelve hundred input datagrams (Ethernet transmissions) software checksummed, followed by more than half a trillion output datagrams software checksummed.
In comparison, on my main firewall the ratio is about 6:1 input to output checksummed. While I have different network interfaces in use and have a different network infrastructure -- packet forwarding, trunking, vlans, and carp -- your ratio of input to output checksumming caught my eye.
Then you have 600 million TCP packets software checksummed, but only 50 thousand packets received or sent.
All of that may be due to your bridged infrastructure, but ... these seem odd to me.
I have 4 billion UDP "delivered" messages on my main firewall, and that's a tiny Alix machine with three 100BaseT NICs that's been up for 35 days (since the last 5.7-stable update). So the large number in your output may not be as wacky as it appears to be.
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Edited to add: The UDP "delivered" statistic must be bytes, rather than packets.
What does netstat -ivn -- as in daily(8) reports, mentioned above -- show you? Any receive or transmit errors?
Last edited by jggimi; 18th September 2015 at 12:41 PM.
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