ipv6 connexion fail - ipv4 OK

Daniel tech at tootai.net
Thu Aug 26 11:14:00 UTC 2021


Le 25/08/2021 à 17:25, Daniel a écrit :
> Hi list,
> I setup wireguard on a server running Debian 11 and get it to work with 
> 2 clients (Debian 11 and Ubuntu 20.04). Clients and server are on 
> separate networks, one client behind a FW the other direct on Internet, 
> no FW at all (VPS).
> With this setup and ipv4 connection to the public IP of the server, 
> everything is working as expected, ipv4 as well as ipv6 are passing 
> smoothly.
> Now I want to connect using the ipv6 address of the wg interface as both 
> clients and server have ULA ipv6.

Here is GUA to read.

> This fail, wg show that connection is 
> established but VPN is not usable. It's not a FW problem as I can ssh to 
> the ipv6 address, as well as a netcat test from/to server IP -from each 
> client- on an UDP port is working properly. Also, 
> net.ipv6.conf.all.forwarding=1 is activated in sysctl.conf
> All network stuff is done in /etc/network/interfaces which call the 
> config file. The ipv6 address of the server is affected _to the 
> wireguard interface_ (in ipv4 it's another interface who take care of 
> the public address)
> Server version is wireguard-tools v1.0.20210223.
> If someone have any hint, thanks to share ;)

Daniel Huhardeaux
+33.368460088 at tootai.net	      sip:820 at sip.tootai.net
+41.445532125 at swiss-itech.ch		    tootaiNET

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