Hi, Well, as suggested, I got an account on Hurricane Electric and I got the tunnel data. The next step is how to configure it on my router. I was reading some Spanish instructions from <https://www.redeszone.net/2019/05/05/tutorial-tunnelbroker-router-asus-ipv6/>, which are for an ASUS router. I don't find instructions for my specific router, a Comtrend VG-8050. Basically the instructions are: +++................... * Server IPv4 Address: we must indicate the IP address that appears in Tunnelbroker as "Server IPv4 Address". * Client IPv6 Address: we must indicate the IP address that appears in Tunnelbroker as "Client IPv6 Address", but without the /64 at the end. * IPv6 Prefix Length: we must indicate the /64 that we have in the final part of the IP address. Simply indicate the "64" without the bar. * Server IPv6 Address: we must indicate the IP address that appears in Tunnelbroker as "Server IPv6 Address", but without the /64 at the end, only the IP address without the prefix. * Tunnel MTU: we select the default value of the tunnel which is 1480. * Tunnel TTL: select 255 which is the default value. In the section of "IPv6 LAN Seetings" we must indicate: * LAN Prefix Length: normally in the tunnels that we create is /64, therefore, we should simply indicate "64". In case you ask for a /48, you must use this prefix. * LAN IPv6 Prefix: we must indicate the address that appears in Tunnelbroker as "Routed /64", but without the /64 at the end, and ended with "::" as you can see. (Translated with www.DeepL.com/Translator) ...................++- I don't have any of that :-( What I have is <https://susepaste.org/3886098>: +++................... IP Tunneling -- 6in4 Tunnel Configuration Name WAN WAN Dynamic IPv4 Mask Length 6rd Prefix Border Relay Address Remove [ADD] [Remove] ...................++- I click the ADD button, and I see <https://susepaste.org/9619892>: +++................... IP Tunneling -- 6in4 Tunnel Configuration Currently, only 6rd configuration is supported. Tunnel Name [....................] Mechanism: 6RD (no other choice is available) Associated WAN Interface: 6/ppp0.1 (other choices are: 3/eth0.2, 2/eth0.3, that do not seem appropriate) Associated LAN Interface: LAN/br0 (no other choices) (*) Manual (*) Automatic (does not seem to change anything) IPv4 Mask Length: [....................] 6rd Prefix with Prefix Length: [....................] Border Relay IPv4 Address: [....................] ...................++- I don't know what to do at this point. -- Cheers / Saludos, Carlos E. R. (from 15.0 x86_64 at Telcontar)