Index: head/sys/dev/hyperv/netvsc/if_hn.c
===================================================================
--- head/sys/dev/hyperv/netvsc/if_hn.c
+++ head/sys/dev/hyperv/netvsc/if_hn.c
@@ -4323,6 +4323,7 @@
 	KASSERT((rxr->hn_rx_flags & HN_RX_FLAG_ATTACHED) == 0,
 	    ("RX ring %d already attached", idx));
 	rxr->hn_rx_flags |= HN_RX_FLAG_ATTACHED;
+	rxr->hn_chan = chan;
 
 	if (bootverbose) {
 		if_printf(sc->hn_ifp, "link RX ring %d to chan%u\n",
Index: head/sys/dev/hyperv/netvsc/if_hnvar.h
===================================================================
--- head/sys/dev/hyperv/netvsc/if_hnvar.h
+++ head/sys/dev/hyperv/netvsc/if_hnvar.h
@@ -85,6 +85,8 @@
 
 	void		*hn_br;		/* TX/RX bufring */
 	struct hyperv_dma hn_br_dma;
+
+	struct vmbus_channel *hn_chan;
 } __aligned(CACHE_LINE_SIZE);
 
 #define HN_TRUST_HCSUM_IP	0x0001