treewide: integrate new DNS server

This integrates the new DNS server into the network service, replacing 
CoreDNS.

Change-Id: I1d2e0fd3315dc2c602a8f805ed701633799e9986
Reviewed-on: https://review.monogon.dev/c/monogon/+/3260
Tested-by: Jenkins CI
Reviewed-by: Lorenz Brun <lorenz@monogon.tech>
diff --git a/metropolis/node/core/main.go b/metropolis/node/core/main.go
index ede3478..3d2969f 100644
--- a/metropolis/node/core/main.go
+++ b/metropolis/node/core/main.go
@@ -19,14 +19,12 @@
 import (
 	"context"
 	"fmt"
-	"net"
 	"os"
 	"strings"
 	"time"
 
 	"golang.org/x/sys/unix"
 
-	"source.monogon.dev/metropolis/node"
 	"source.monogon.dev/metropolis/node/core/cluster"
 	"source.monogon.dev/metropolis/node/core/devmgr"
 	"source.monogon.dev/metropolis/node/core/localstorage"
@@ -39,6 +37,7 @@
 	"source.monogon.dev/metropolis/node/core/update"
 	mversion "source.monogon.dev/metropolis/version"
 	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/net/dns"
 	"source.monogon.dev/osbase/supervisor"
 	"source.monogon.dev/osbase/tpm"
 	"source.monogon.dev/version"
@@ -120,9 +119,9 @@
 		haveTPM = false
 	}
 
-	networkSvc := network.New(nil)
+	metrics.CoreRegistry.MustRegister(dns.MetricsRegistry)
+	networkSvc := network.New(nil, []string{"hosts", "kubernetes"})
 	networkSvc.DHCPVendorClassID = "dev.monogon.metropolis.node.v1"
-	networkSvc.ExtraDNSListenerIPs = []net.IP{node.ContainerDNSIP}
 	timeSvc := timesvc.New()
 	devmgrSvc := devmgr.New()