diff --git a/sys/net/lagg/ieee8023ad_lacp.c b/sys/net/lagg/ieee8023ad_lacp.c
--- a/sys/net/lagg/ieee8023ad_lacp.c
+++ b/sys/net/lagg/ieee8023ad_lacp.c
@@ -1914,6 +1914,7 @@
 			goto bad;
 		}
 		mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE;
+		/* XXX: no rate limiting on marker responses (DF-0370) */
 		memcpy(&mdu->mdu_eh.ether_dhost,
 		    &ethermulticastaddr_slowprotocols, ETHER_ADDR_LEN);
 		memcpy(&mdu->mdu_eh.ether_shost,