I2P support forum

i2p router mostly shows:
Network: IPv4: OK; IPv6: Firewalled

i2p supports UPnP.
Is this UPnP for IPv4 only.
Or also UPnP for IPv6 ?

Q&A-Freak wrote: ↑30 Jun 2024 18:19 i2p router mostly shows:
Network: IPv4: OK; IPv6: Firewalled

i2p supports UPnP.
Is this UPnP for IPv4 only.
Or also UPnP for IPv6 ?

UPnP only works with IPv4 as IPv6 generally does not need ports to be forwarded. If your connection supports IPv6 you may need to open the port used by I2P for IPv6.

Mostly true in practice; however, UPnP does support IPv6 port forwarding ("pinholing") if it supports "IGD2". The good news is that we've supported IGD2 pinholing for a few years now. The bad news is that most UPnP devices out there don't support IGD2. In rare cases the device may support it but you have to go into its config and enable it.

Also, ensure you're running the latest release, we have had several fixes on firewall-detection, ipv6, and related things in recent releases.