Hi Rob
Having seen your timestamped logs I think your results now have enough in common with my own that we don’t have to be disturbed by the differences
To be the interesting points in your log appear to be …
At 44 seconds where you see behaviour similar to me (although the length of delay you observe is larger):
[ 41.517770] 64 bytes from 10.1.100.1: icmp_seq=42 ttl=64 time=0.691 ms
[ 44.187370] 64 bytes from 10.1.100.1: icmp_seq=43 ttl=64 time=1655 ms
[ 44.187706] 64 bytes from 10.1.100.1: icmp_seq=44 ttl=64 time=631 ms
[ 44.557915] 64 bytes from 10.1.100.1: icmp_seq=45 ttl=64 time=0.679 ms
At 164 seconds (notable for being 44 + 2*60) where we a similar problem… and a disconnect of some form:
[ 161.862395] 64 bytes from 10.1.100.1: icmp_seq=161 ttl=64 time=2.46 ms
[ 164.284070] 64 bytes from 10.1.100.1: icmp_seq=162 ttl=64 time=1422 ms
[ 164.284070] 64 bytes from 10.1.100.1: icmp_seq=163 ttl=64 time=408 ms
[ 333.828653] 64 bytes from 10.1.100.1: icmp_seq=329 ttl=64 time=0.659 ms
Finally at 404 seconds (noteable for being 164 + 4*60) we see another bubble:
[ 401.814760] 64 bytes from 10.1.100.1: icmp_seq=396 ttl=64 time=0.681 ms
[ 404.288240] 64 bytes from 10.1.100.1: icmp_seq=397 ttl=64 time=1467 ms
[ 404.288240] 64 bytes from 10.1.100.1: icmp_seq=398 ttl=64 time=444 ms
[ 405.860574] 64 bytes from 10.1.100.1: icmp_seq=400 ttl=64 time=0.665 ms
As I said, this is sufficiently similar to what I observe to call it the same phenomenon. The lengths of interruption might be longer for you (and you as seeing full network disconnect too, whilst I only see the latency problems) but the characteristic every two minutes pattern does seem to be common.
Since it appears to be a regular interference if you want to get a better sense of maximum delay you need to increase the ping rate. For comparison, when I ping at -i 0.01 my latency bubbles look like this:
[ 8.138460] 64 bytes from 192.168.1.1: icmp_seq=558 ttl=64 time=0.582 ms
[ 9.580049] 64 bytes from 192.168.1.1: icmp_seq=559 ttl=64 time=1426 ms
[ 9.580896] 64 bytes from 192.168.1.1: icmp_seq=560 ttl=64 time=1411 ms
[ 9.597706] 64 bytes from 192.168.1.1: icmp_seq=561 ttl=64 time=1405 ms
Daniel.