juanfont/headscale · error

parsing IP %s: %w

Error message

parsing IP %s: %w

What it means

Error "parsing IP %s: %w" thrown in juanfont/headscale.

Source

Thrown at integration/tsic/tsic.go:890

			"ip",
		}

		result, _, err := t.Execute(command)
		if err != nil {
			return nil, fmt.Errorf("%s failed to get IPs: %w", t.hostname, err)
		}

		ips := make([]netip.Addr, 0)

		for address := range strings.SplitSeq(result, "\n") {
			address = strings.TrimSuffix(address, "\n")
			if len(address) < 1 {
				continue
			}

			ip, err := netip.ParseAddr(address)
			if err != nil {
				return nil, fmt.Errorf("parsing IP %s: %w", address, err)
			}

			ips = append(ips, ip)
		}

		if len(ips) == 0 {
			return nil, fmt.Errorf("no IPs returned yet for %s", t.hostname) //nolint:err113
		}

		return ips, nil
	}, backoff.WithBackOff(backoff.NewExponentialBackOff()), backoff.WithMaxElapsedTime(10*time.Second))
	if err != nil {
		return nil, fmt.Errorf("getting IPs for %s after retries: %w", t.hostname, err)
	}

	return ips, nil
}

View on GitHub (pinned to 565fd254d0)

Solutions

1. Inspect the wrapped error for the underlying cause and correct the failing condition (parsing IP); retry the operation after fixing the input, configuration, or environment.

Example fix

Inspect the wrapped error for the underlying cause and correct the failing condition (parsing IP); retry the operation after fixing the input, configuration, or environment.

When it happens

Trigger: Thrown at integration/tsic/tsic.go:890 when the library encounters an invalid state.

Common situations: An IP string reported by the client could not be parsed. This indicates unexpected 'tailscale ip' output; check client version compatibility.

AI-assisted analysis of juanfont/headscale@565fd254d0 (2026-08-15). Data as JSON: /api/errors/b369ec7f8675a952. Report an issue: GitHub.