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Dropped packets - how many is normal?
So I recently started playing with netdata. Turns out one of my KVM servers is dropping a lot of incoming packets - consistently around 50-60 each second.
The server is basically idle. I can see the dropped count increasing with watch ifconfig ens3 looking under RX/dropped.
I did try exploring with tcpdump: it shows lots of ARP and "ICMP6 neighbor solicitation" packets. The server has IPv6 disabled at the kernel, so I guess I should expect a few dropped packets from that, but 60/second seemed surprising!
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Let your host know.
Then cancel your plans with them OR chargeback.
Then sue for mental damage.
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Das nicht gut
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If you can see them in your OS that means they are dropped by your kernel.
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This means nothing. Packets can be dropped for various reasons, including due to being not addressed to your host (or to any multicast group it's a member of, or as you noticed, if you have IPv6 disabled). Run a long ping or mtr to measure if you have any actual packet loss.
Do a tcp speed test.
You won't be able to achieve the advertised high speeds if there's even a slight loss.
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Thanks for the advice and Dr Who memes.
So I ran a couple of long tests with
ping 8.8.8.8and actually there was a small amount of packet loss (around 1%) but I'm not sure if that's relevant.It looks like the 60 packets being dropped per second are all "ICMP6 neighbor solicitation". The tcpdump logs are full of this sort of thing:
Yes, note the "fun" IPv6 address... not sure what to make of that too... perhaps someone is sending me encoded messages!
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That's Hexspeak.
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Have you noticed how they put cabbages inside salads?
Well, that's pretty much the same thing.
You are dreaming. | And it's a nightmare. | THE SECRET THREAD | THE TRUTH | HA
VES YOU SEEN THIS YURA?„Homo homini rattus.“ | It's not nightmare, it's reality, but it's still nightmare.
LOL what is this forum I have joined??
So just to ensure I have understood correctly,
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