Index: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
===================================================================
--- head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
+++ head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
@@ -629,8 +629,10 @@
 
 	ether_ifattach(ifp, eaddr);
 
-	if_printf(ifp, "TSO: %u/%u/%u\n", ifp->if_hw_tsomax,
-	    ifp->if_hw_tsomaxsegcount, ifp->if_hw_tsomaxsegsize);
+	if (bootverbose) {
+		if_printf(ifp, "TSO: %u/%u/%u\n", ifp->if_hw_tsomax,
+		    ifp->if_hw_tsomaxsegcount, ifp->if_hw_tsomaxsegsize);
+	}
 
 	/* Inform the upper layer about the long frame support. */
 	ifp->if_hdrlen = sizeof(struct ether_vlan_header);