Vultr IPv6 Proxy Setup: Firewall, Agent, and First 1,000 Proxies

Part of our IPv6 proxy management guide series.

Vultr is a popular host for IPv6-heavy workloads. Here's the fastest path to a working fleet on MeshProx.

1. VPS requirements

• Ubuntu 22.04+ or Debian 11+
• IPv6 enabled on the instance (Vultr panel → Settings → IPv6)
• Root or passwordless sudo SSH

2. Onboard in MeshProx

1. Servers → Add server (IP, SSH key)
2. Run Preflight — checks IPv6 range, opens UFW on the host
3. Install agent
4. Verify proxy — creates one live proxy and tests SOCKS5

3. Generate at scale

Proxies → pick server → choose SOCKS5 or HTTP → generate 100–10,000+. Export CSV or URL list.

Troubleshooting

• Proxy test timeout → re-run preflight (UFW opens TCP 20000–60000 automatically) or click Fix on the UFW check
• Agent offline → check systemctl status callaby-agent on the VPS
• IPv6 exit not showing → target site may be IPv4-only; test with an IPv6-only checker