diff --git a/cmd/ooniprobe/internal/nettests/groups.go b/cmd/ooniprobe/internal/nettests/groups.go
index 5c4d9bc..2390432 100644
--- a/cmd/ooniprobe/internal/nettests/groups.go
+++ b/cmd/ooniprobe/internal/nettests/groups.go
@@ -37,6 +37,7 @@ var All = map[string]Group{
 			FacebookMessenger{},
 			Telegram{},
 			WhatsApp{},
+			Signal{},
 		},
 		UnattendedOK: true,
 	},
@@ -54,7 +55,6 @@ var All = map[string]Group{
 		Nettests: []Nettest{
 			DNSCheck{},
 			STUNReachability{},
-			Signal{},
 		},
 	},
 }
diff --git a/internal/engine/geolocate/ipconfig_test.go b/internal/engine/geolocate/ipconfig_test.go
index ed9b262..d9d6c9b 100644
--- a/internal/engine/geolocate/ipconfig_test.go
+++ b/internal/engine/geolocate/ipconfig_test.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"net"
 	"net/http"
+	"os"
 	"testing"
 
 	"github.com/apex/log"
@@ -11,6 +12,11 @@ import (
 )
 
 func TestIPLookupWorksUsingIPConfig(t *testing.T) {
+	if os.Getenv("CI") == "true" {
+		// See https://github.com/ooni/probe-cli/pull/259/checks?check_run_id=2166066881#step:5:123
+		// as well as https://github.com/ooni/probe/issues/1418.
+		t.Skip("This test does not work with GitHub Actions")
+	}
 	ip, err := ipConfigIPLookup(
 		context.Background(),
 		http.DefaultClient,
diff --git a/internal/engine/geolocate/iplookup.go b/internal/engine/geolocate/iplookup.go
index acf0222..01462bd 100644
--- a/internal/engine/geolocate/iplookup.go
+++ b/internal/engine/geolocate/iplookup.go
@@ -7,7 +7,6 @@ import (
 	"math/rand"
 	"net"
 	"net/http"
-	"sync"
 	"time"
 
 	"github.com/ooni/probe-cli/v3/internal/engine/internal/multierror"
@@ -61,8 +60,6 @@ var (
 			fn:   ubuntuIPLookup,
 		},
 	}
-
-	once sync.Once
 )
 
 type ipLookupClient struct {