feat: update on how to show dns config

internal/service/dns.go

@@ -3,10 +3,13 @@ package service
 import (
 	"context"
 	"errors"
+	"fmt"
 	"github.com/bufbuild/connect-go"
 	"github.com/jsiebens/ionscale/internal/broker"
 	"github.com/jsiebens/ionscale/internal/domain"
+	"github.com/jsiebens/ionscale/internal/mapping"
 	api "github.com/jsiebens/ionscale/pkg/gen/ionscale/v1"
+	"tailscale.com/util/dnsname"
 )
 
 func (s *Service) GetDNSConfig(ctx context.Context, req *connect.Request[api.GetDNSConfigRequest]) (*connect.Response[api.GetDNSConfigResponse], error) {
@@ -24,10 +27,12 @@ func (s *Service) GetDNSConfig(ctx context.Context, req *connect.Request[api.Get
 	}
 
 	config := tailnet.DNSConfig
+	tailnetDomain := dnsname.SanitizeHostname(tailnet.Name)
 
 	resp := &api.GetDNSConfigResponse{
 		Config: &api.DNSConfig{
 			MagicDns:         config.MagicDNS,
+			MagicDnsSuffix:   fmt.Sprintf("%s.%s", tailnetDomain, mapping.NetworkMagicDNSSuffix),
 			OverrideLocalDns: config.OverrideLocalDNS,
 			Nameservers:      config.Nameservers,
 			Routes:           domainRoutesToApiRoutes(config.Routes),