Large RTT or Why doesn't my ping traffic get discarded?
bill at herrin.us
Wed Dec 21 19:56:14 UTC 2022
On Wed, Dec 21, 2022 at 9:10 AM Jason Iannone <jason.iannone at gmail.com> wrote:
> Here's a question I haven't bothered to ask until now. Can someone please help me understand why I receive a ping reply after almost 5 seconds?
> 64 bytes from 126.96.36.199: icmp_seq=398 ttl=54 time=4915.096 ms
> 64 bytes from 188.8.131.52: icmp_seq=399 ttl=54 time=4310.575 ms
> 64 bytes from 184.108.40.206: icmp_seq=400 ttl=54 time=4196.075 ms
> 64 bytes from 220.127.116.11: icmp_seq=401 ttl=54 time=4287.048 ms
> 64 bytes from 18.104.22.168: icmp_seq=403 ttl=54 time=2280.466 ms
> 64 bytes from 22.214.171.124: icmp_seq=404 ttl=54 time=1279.348 ms
> 64 bytes from 126.96.36.199: icmp_seq=405 ttl=54 time=276.669 ms
This usually means a problem on the Linux machine originating the
packet. It has lost the ARP for the next hop or something similar so
the outbound ICMP packet is queued. The glitch repairs itself,
briefly, releasing the queued packets. Then it comes right back.
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