Add check if allowedIp already set

cmd/app/main.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	envChecks "git.ruekov.eu/ruakij/routingtabletowg/lib/environmentchecks"
+    "git.ruekov.eu/ruakij/routingtabletowg/lib/wgchecks/netchecks"
     
 	"github.com/vishvananda/netlink"
 	"golang.zx2c4.com/wireguard/wgctrl"
@@ -97,6 +98,11 @@ func main() {
                         continue
                     }
                     
+                    // Check if already set
+                    if i, _ := netchecks.IPNetIndexByIPNet(&peer.AllowedIPs, ipv6); i != -1 {
+                        continue
+                    }
+
                     // Add the IPv6 allowed-ip to the peer
                     allowedIPs = append(allowedIPs, *ipv6)
                 }