--- /sys/src/9k/386/devether.c
+++ /sys/src/9k/386/devether.c
@@ -424,7 +424,7 @@ etherprobe(int cardno, int ctlrno)
 	 * interrupts for itself, e.g. HyperTransport MSI.
 	 */
 	if(ether->irq >= 0)
-		intrenable(ether->irq, ether->interrupt, ether, ether->tbdf, name);
+		ether->vector = intrenable(ether->irq, ether->interrupt, ether, ether->tbdf, name);
 
 	i = sprint(buf, "#l%d: %s: ", ctlrno, cards[cardno].type);
 	if(ether->mbps >= 1000)
@@ -504,6 +504,8 @@ ethershutdown(void)
 		ether = etherxx[i];
 		if(ether == nil)
 			continue;
+		if(ether->irq >= 0)
+			intrdisable(ether->vector);
 		if(ether->shutdown == nil) {
 			print("#l%d: no shutdown function\n", i);
 			continue;
--- /sys/src/9k/k10/etherif.h
+++ /sys/src/9k/k10/etherif.h
@@ -33,6 +33,7 @@ struct Ether {
 	void	(*power)(Ether*, int);	/* power on/off */
 	void	(*shutdown)(Ether*);	/* shutdown hardware before reboot */
 	void	*ctlr;
+	void	*vector;
 
 	int	scan[Ntypes];		/* base station scanning interval */
 	int	nscan;			/* number of base station scanners */