Hi there !
I share ZeroTier between a few computers. Sometimes those computers share the same internal network, sometimes not. That’s one of the reason we use ZeroTier.
Sometimes, the connection becomes really unstable. I know it isn’t an issue in my physical network. How ? If I ping a machine on the network through its ZT IP address, I have many timeouts :
Request timeout for icmp_seq 3
64 bytes from 10.*.14: icmp_seq=3 ttl=64 time=1007.520 ms
64 bytes from 10..14: icmp_seq=4 ttl=64 time=8.545 ms
Request timeout for icmp_seq 6
Request timeout for icmp_seq 7
Request timeout for icmp_seq 8
Request timeout for icmp_seq 9
64 bytes from 10..14: icmp_seq=7 ttl=64 time=3159.897 ms
64 bytes from 10..14: icmp_seq=8 ttl=64 time=2158.794 ms
64 bytes from 10..*14: icmp_seq=9 ttl=64 time=1157.515 ms
If I ping the same machine through the local network everything works fine :
64 bytes from 192.168.0.33: icmp_seq=0 ttl=64 time=2.206 ms
64 bytes from 192.168.0.33: icmp_seq=1 ttl=64 time=1.730 ms
64 bytes from 192.168.0.33: icmp_seq=2 ttl=64 time=84.514 ms
64 bytes from 192.168.0.33: icmp_seq=3 ttl=64 time=1.744 ms
64 bytes from 192.168.0.33: icmp_seq=4 ttl=64 time=2.249 ms
64 bytes from 192.168.0.33: icmp_seq=5 ttl=64 time=1.113 ms
64 bytes from 192.168.0.33: icmp_seq=6 ttl=64 time=71.381 ms
64 bytes from 192.168.0.33: icmp_seq=7 ttl=64 time=5.673 ms
64 bytes from 192.168.0.33: icmp_seq=8 ttl=64 time=2.375 ms
64 bytes from 192.168.0.33: icmp_seq=9 ttl=64 time=25.289 ms
I have absolutely no clues why my ZT network is unstable. We have only 5 machines registered on the VPN (one of them is offline now), default configuration, no tweaks at all. The only thing is that I can’t manage the router of the network (that’s the main. reason I do use ZT) .
I have checked https://zerotier.atlassian.net/wiki/spaces/SD/pages/6815768/Router+Configuration+Tips and I don’t have double NAT.
I have this problem between each of my machines, not only two of them.
I have found some people with network issues but each time they had to restart their vpn or something like this. In my case, the network is just unstable, for a few seconds, at random times. Maybe it’s because of some congestion in ZT servers ? Maybe something else.
Any Idea ?