Q: When is it available?
A: In Java I2P, in dev build 0.9.35-1, but it's disabled by default. The release will be 0.9.36 (August), but it will still be disabled by default. It will be enabled in 0.9.37 (November). In i2pd, it's planned for 2.20 (not scheduled). No word on Kovri's plans.
Q: How to enable?
A: For Java I2P: Advanced config i2np.ntcp2.enable=true ... restart required.
Q: Is it on the same port as NTCP 1?
A: The spec allows either the same or a different port. Implementation-dependent. In Java I2P we will use the same port. I believe i2pd will use a different port.
Q: Are there separate connection limits for NTCP 2?
A: Not in Java I2P. The NTCP connection limits apply to the total NTCP 1 and 2 connections.
Q: How do I know if it's working, or if I have NTCP2 connections?
A: Look on the /peers page in the NTCP section, there's now a column for version. There are very few routers out there with NTCP2 enabled right now, you may not see any.
Q: Does NTCP 2 work for outbound connections if I'm firewalled?
A: It should, but I haven't tested that yet, so it probably doesn't.
Q: What are the benefits of NTCP 2?
A: Faster, more secure, more resistant to traffic analysis and blocking.
Q: Will NTCP 1 support be removed?
A: Eventually, yes.
NTCP2 FAQ
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MANIAC
Re: NTCP2 FAQ
Thank you, I2P team, for your support of this project.