Hello, I have a Debian stable wireguard server (192.168.11.254) with IP forwarding and Debian stable wireguard client (192.168.11.4) with wireguard setup through the plasma network manager interface. The server setup works flawless with an Android wireguard client, therefore I suspect that the issue is on the client side. I don't see an error message but I don't get responses to ping from client to server: root@aura:/etc/wireguard# ping 192.168.11.254 PING 192.168.11.254 (192.168.11.254) 56(84) bytes of data. ^C --- 192.168.11.254 ping statistics --- 5 packets transmitted, 0 received, 100% packet loss, time 4080ms root@aura:/etc/wireguard# Also I don't see an issue with the config: root@aura:/etc/wireguard# wg interface: ionos public key: +O9Ea+2W3B7ke14Y6+7QN8o8l3iObNd8xYy4lhz5Hhk= private key: (hidden) listening port: 57832 fwmark: 0xcb7f peer: h41FylDIh3CnAyzsOhRVu/uzuU2gxMaQ5vDdqoXRkko= endpoint: 87.106.44.192:51820 allowed ips: 0.0.0.0/0, ::/0 transfer: 0 B received, 2.31 KiB sent root@aura:/etc/wireguard# ip route default via 192.168.11.254 dev ionos proto static metric 50 default via 192.168.178.1 dev wlo1 proto dhcp src 192.168.178.31 metric 600 169.254.0.0/16 dev wlo1 scope link metric 1000 192.168.11.0/24 dev ionos proto kernel scope link src 192.168.11.4 metric 50 192.168.178.0/24 dev wlo1 proto kernel scope link src 192.168.178.31 metric 600 root@aura:/etc/wireguard# ip addr show dev ionos 19: ionos: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1420 qdisc noqueue state UNKNOWN group default qlen 1000 link/none inet 192.168.11.4/24 brd 192.168.11.255 scope global noprefixroute ionos valid_lft forever preferred_lft forever inet6 fe80::f52b:51b5:4aeb:221e/64 scope link stable-privacy valid_lft forever preferred_lft forever root@aura:/etc/wireguard# Any hint or idea what I am missing is welcome. Thanks Rainer
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