Hello, yes, the Sever has a dynamic IP. >On the client, is the server peer ip correct? Which entry are you refering to? I assume Endpoint = Dyn.IP:51820 Yes, but otherwise, the connection would not even be established, right? For reference, here the complete client config: [Interface] Address = 10.192.122.3/32 PrivateKey = xx= [Peer] PublicKey = yy= Endpoint = Dyn.IP:51820 AllowedIPs = 0.0.0.0/0 PersistentKeepalive = 25 Regards, Hendrik ------ Originalnachricht ------ Von: "Ivan Labáth" An: "Hendrik Friedel" Cc: "Vasili Pupkin" ; wireguard@lists.zx2c4.com Gesendet: 26.08.2019 20:02:44 Betreff: Re: Keep-alive does not keep the connection alive >Hello, > >I notice you are using dynamic ips for server. >On the client, is the server peer ip correct? > >Regards, >Ivan > >On Sun, Aug 25, 2019 at 06:44:53PM +0000, Hendrik Friedel wrote: >> Hello, >> >> thanks for your reply. >> It is linux (Kernel 5.x) in both cases. >> >> Regards, >> Hendrik >> >> ------ Originalnachricht ------ >> Von: "Vasili Pupkin" >> An: "Hendrik Friedel" >> Cc: wireguard@lists.zx2c4.com >> Gesendet: 25.08.2019 17:59:59 >> Betreff: Re: Keep-alive does not keep the connection alive >> >> >What OS is running on client side? I have this issue on Win7 client, >> >can explain it further, it has nothing to do with keepalives though, >> >it is a bug in tun adapter implementation >> > >> >On Sun, Aug 25, 2019 at 6:38 PM Hendrik Friedel wrote: >> >> I have a setup in which the Server IP is known, whereas the Client IP is changing. Thus, I rely on the Client to connect to the Server. I want the Client to keep the connection alive all the time though, so that the Server can also initiate a connection to the Server when needed. Both, client and server are behind a NAT/Router. >> >> I would think, that the "PersistentKeepalive = 25" on the Client would ckeep the connection open. The connection works fine while used. But after a while, I cannot connect from the Server to the client anymore. >> >> I would assume that a ping from the Client to the IP of the endpoint would help to re-alive the connection - but it does not. >> >> >> >> Only after a wg-quick down and up all is fine again. >> >> >> >> Below some more information. >> >> >> >> Can you help me to find, what I am doing wrong? >> >> _______________________________________________ >> WireGuard mailing list >> WireGuard@lists.zx2c4.com >> https://lists.zx2c4.com/mailman/listinfo/wireguard