Node stays offline

Greetings everyone! I am having annoying trouble trying to join my network after installing zerotier on my Ubuntu. When using

sudo zerotier-cli info

it shows offline and is unable to join any network. I have used

sudo lsof -i

to check if zerotier-one was properly working, and it showed

zerotier- 12902 zerotier-one 6u IPv4 170386 0t0 TCP localhost:9993 (LISTEN)
zerotier- 12902 zerotier-one 7u IPv6 170387 0t0 TCP ip6-localhost:9993 (LISTEN)
zerotier- 12902 zerotier-one 8u IPv4 172228 0t0 TCP ThinkStation-S:40612->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 13u IPv4 167757 0t0 TCP ThinkStation-S:40614->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 14u IPv4 165756 0t0 UDP ThinkStation-S:9993
zerotier- 12902 zerotier-one 15u IPv4 165757 0t0 TCP ThinkStation-S:9993 (LISTEN)
zerotier- 12902 zerotier-one 16u IPv4 165758 0t0 UDP ThinkStation-S:49604
zerotier- 12902 zerotier-one 17u IPv4 165759 0t0 TCP ThinkStation-S:49604 (LISTEN)
zerotier- 12902 zerotier-one 18u IPv4 165760 0t0 UDP ThinkStation-S:40181
zerotier- 12902 zerotier-one 19u IPv4 165761 0t0 TCP ThinkStation-S:40181 (LISTEN)
zerotier- 12902 zerotier-one 20u IPv4 174593 0t0 TCP ThinkStation-S:40616->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 21u IPv4 172358 0t0 TCP ThinkStation-S:40618->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 23u IPv4 170949 0t0 TCP ThinkStation-S:40566->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 24u IPv4 173214 0t0 TCP ThinkStation-S:40568->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 25u IPv4 173282 0t0 TCP ThinkStation-S:40570->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 26u IPv4 164521 0t0 TCP ThinkStation-S:40572->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 27u IPv4 164542 0t0 TCP ThinkStation-S:40574->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 28u IPv4 173409 0t0 TCP ThinkStation-S:40576->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 29u IPv4 173466 0t0 TCP ThinkStation-S:40578->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 30u IPv4 164556 0t0 TCP ThinkStation-S:40580->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 31u IPv4 167539 0t0 TCP ThinkStation-S:40582->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 32u IPv4 164581 0t0 TCP ThinkStation-S:40584->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 33u IPv4 164591 0t0 TCP ThinkStation-S:40586->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 34u IPv4 171275 0t0 TCP ThinkStation-S:40588->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 35u IPv4 171277 0t0 TCP ThinkStation-S:40590->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 36u IPv4 172176 0t0 TCP ThinkStation-S:40592->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 37u IPv4 166906 0t0 TCP ThinkStation-S:40594->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 38u IPv4 175113 0t0 TCP ThinkStation-S:40596->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 39u IPv4 175125 0t0 TCP ThinkStation-S:40598->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 40u IPv4 169603 0t0 TCP ThinkStation-S:40600->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 41u IPv4 169608 0t0 TCP ThinkStation-S:40602->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 42u IPv4 164663 0t0 TCP ThinkStation-S:40606->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 43u IPv4 171316 0t0 TCP ThinkStation-S:40608->global-anycast-core-svc.zerotier.com:https (SYN_SENT)
zerotier- 12902 zerotier-one 44u IPv4 171322 0t0 TCP ThinkStation-S:40610->global-anycast-core-svc.zerotier.com:https (SYN_SENT)

I think there might be some traffic blocks but I don’t have access to my router. Is there any way I can find out the cause of this situation? Or any solution? Thank you.

Looks like your router is definitely blocking ZeroTier’s access to the network. You may wish to check that there are no iptables rules that are blocking traffic on your machine itself. Aside from that, without access to the router, I don’t think there’s much you can do.

Geez…What if I used a proxy server to send my requests to the zerotier server? Currently my router has no limitation on the proxy server’s traffic. Thank you for your kind reply anyway.

ZeroTier is a peer to peer protocol underneath the hood and does not support proxy servers. Direct access between peers is required for optimal performance.

I see. A lot of appreciations!

My Zorin OS (based on Ubuntu) laptop has the same issue, not every time but sometimes.

I found a simple solution that always work:

Suspend the computer, wait a a couple of minutes and when I’m back online again it works like a charm. :slight_smile:

I always use VPN and ZeroTier has no issue with that. It also works when VPN is disabled.

PS You can also just open a terminal and use this command:

sudo systemctl restart zerotier-one