[VOL-2778] Handling IGMP

Change-Id: I54c26bc438a144c7d4c64a9b3d543461fc743ab2
diff --git a/internal/bbsim/devices/pon.go b/internal/bbsim/devices/pon.go
index a48dfb6..f9f9290 100644
--- a/internal/bbsim/devices/pon.go
+++ b/internal/bbsim/devices/pon.go
@@ -21,7 +21,7 @@
 	"fmt"
 
 	"github.com/looplab/fsm"
-	"github.com/opencord/voltha-protos/v2/go/openolt"
+	"github.com/opencord/voltha-protos/v3/go/openolt"
 	log "github.com/sirupsen/logrus"
 )