just to make sure. since i'm updating wireguard in dd-wrt very often to 
the latest state of art code from git. which dd-wrt version did you use 
for establishing the connection?

did you also take care about usual firewall problems? by default the the 
firewall is closed on wan, so no inbound connection is possible


Sebastian

Am 09.10.2018 um 17:06 schrieb Dennis van J.:
>
> Hi all,
>
> I have setup Wireguard on a Gentoo box, compiled it into the kernel 
> using instructions on the wireguard website. Got my mobile to connect 
> using 4G to this box fine, so I wanted to test further with a friend 
> of mine who has a DD-wrt installation on his router. Wireguard is 
> integrated into the DD-wrt build, we set it up, but the tunnel does 
> not come up. On the server I only see this:
>
> Oct  9 16:45:34 omega kernel: [178809.449718] wireguard: wg0: 
> Receiving handshake initiation from peer 10 (x.169.86.x:22300)
> Oct  9 16:45:34 omega kernel: [178809.449721] wireguard: wg0: Sending 
> handshake response to peer 10 (x.169.86.x:22300)
> Oct  9 16:45:34 omega kernel: [178809.450130] wireguard: wg0: Keypair 
> 32179 destroyed for peer 10
> Oct  9 16:45:34 omega kernel: [178809.450131] wireguard: wg0: Keypair 
> 32180 created for peer 10
> Oct  9 16:45:39 omega kernel: [178814.519668] wireguard: wg0: 
> Receiving handshake initiation from peer 10 (x.169.86.x:22300)
> Oct  9 16:45:39 omega kernel: [178814.519671] wireguard: wg0: Sending 
> handshake response to peer 10 (x.169.86.x:22300)
> Oct  9 16:45:39 omega kernel: [178814.520062] wireguard: wg0: Keypair 
> 32180 destroyed for peer 10
> Oct  9 16:45:39 omega kernel: [178814.520063] wireguard: wg0: Keypair 
> 32181 created for peer 10
> Oct  9 16:45:44 omega kernel: [178819.579701] wireguard: wg0: 
> Receiving handshake initiation from peer 10 (x.169.86.x:22300)
> Oct  9 16:45:44 omega kernel: [178819.579704] wireguard: wg0: Sending 
> handshake response to peer 10 (x.169.86.x:22300)
> Oct  9 16:45:44 omega kernel: [178819.580094] wireguard: wg0: Keypair 
> 32181 destroyed for peer 10
> Oct  9 16:45:44 omega kernel: [178819.580095] wireguard: wg0: Keypair 
> 32182 created for peer 10
> Oct  9 16:45:50 omega kernel: [178824.910142] wireguard: wg0: 
> Receiving handshake initiation from peer 10 (x.169.86.x:22300)
> Oct  9 16:45:50 omega kernel: [178824.910145] wireguard: wg0: Sending 
> handshake response to peer 10 (x.169.86.x:22300)
> Oct  9 16:45:50 omega kernel: [178824.910535] wireguard: wg0: Keypair 
> 32182 destroyed for peer 10
> Oct  9 16:45:50 omega kernel: [178824.910536] wireguard: wg0: Keypair 
> 32183 created for peer 10
> Oct  9 16:45:55 omega kernel: [178829.950001] wireguard: wg0: 
> Receiving handshake initiation from peer 10 (x.169.86.x:22300)
> Oct  9 16:45:55 omega kernel: [178829.950003] wireguard: wg0: Sending 
> handshake response to peer 10 (x.169.86.x:22300)
> Oct  9 16:45:55 omega kernel: [178829.950406] wireguard: wg0: Keypair 
> 32183 destroyed for peer 10
> Oct  9 16:45:55 omega kernel: [178829.950407] wireguard: wg0: Keypair 
> 32184 created for peer 10
>
> Port on the server is open (since the 4G test works). We can reach the 
> 22300 port on his side. Checked the pub/private keys as well.
>
> wg show on server:
>
> interface: wg0
>   public key: <pubkey server>
>   private key: (hidden)
>   listening port: 51820
>
> peer: <pubkey of mobile>
>   endpoint: x.200.39.x:8971
>   allowed ips: 0.0.0.0/0
>   latest handshake: 8 hours, 1 minute, 43 seconds ago
>   transfer: 384.24 KiB received, 2.74 MiB sent
>
> peer: <pubkey of dd-wrt>
>   endpoint: x.169.86.x:22300
>   allowed ips: 192.168.1.0/24, 10.100.0.3/32
>   transfer: 2.00 MiB received, 1.24 MiB sent
>
> On DD-wrt router:
>
> interface: oet1
>   public key: <pubkey dd-wrt>
>   private key: (hidden)
>   listening port: 22300
>
> peer: <pubkey of server>
>   endpoint: x.197.199.x:51820
>   allowed ips: 0.0.0.0/0
>   transfer: 0 B received, 777.43 KiB sent
>   persistent keepalive: every 25 seconds
>
> We are trying to get logging to work on that DD-wrt box, that should 
> contain some more clues but maybe any of you have an idea?
>
> Cheers,
>
> Dennis
>
>
>
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