all: s/Magic DNS/MagicDNS/ for consistency

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

net/tsaddr/tsaddr.go

@@ -37,7 +37,7 @@ var (
 )
 
 // TailscaleServiceIP returns the listen address of services
-// provided by Tailscale itself such as the Magic DNS proxy.
+// provided by Tailscale itself such as the MagicDNS proxy.
 func TailscaleServiceIP() netaddr.IP {
 	serviceIP.Do(func() { mustIP(&serviceIP.v, "100.100.100.100") })
 	return serviceIP.v

tailcfg/tailcfg.go

@@ -731,7 +731,7 @@ type DNSConfig struct {
 	// in which case Nameservers applies to all DNS requests regardless of PerDomain's value.
 	PerDomain bool
 	// Proxied indicates whether DNS requests are proxied through a tsdns.Resolver.
-	// This enables Magic DNS. It is togglable independently of PerDomain.
+	// This enables MagicDNS. It is togglable independently of PerDomain.
 	Proxied bool
 }
 

wgengine/netstack/netstack.go

@@ -234,7 +234,7 @@ func (m DNSMap) Resolve(ctx context.Context, addr string) (netaddr.IPPort, error
 		return netaddr.IPPort{IP: ip, Port: uint16(port16)}, nil
 	}
 
-	// No Magic DNS name so try real DNS.
+	// No MagicDNS name so try real DNS.
 	var r net.Resolver
 	ips, err := r.LookupIP(ctx, "ip", host)
 	if err != nil {

wgengine/router/dns/config.go

@@ -23,7 +23,7 @@ type Config struct {
 	// if the manager does not support per-domain settings.
 	PerDomain bool
 	// Proxied indicates whether DNS requests are proxied through a tsdns.Resolver.
-	// This enables Magic DNS.
+	// This enables MagicDNS.
 	Proxied bool
 }