diff --git a/sbin/ifconfig/ifconfig.c b/sbin/ifconfig/ifconfig.c
index b26fbaf82776..fc1972c155b5 100644
--- a/sbin/ifconfig/ifconfig.c
+++ b/sbin/ifconfig/ifconfig.c
@@ -2010,6 +2010,8 @@ static struct cmd basic_cmds[] = {
 	DEF_CMD_ARG("descr",			setifdescr),
 	DEF_CMD("-description",	0,		unsetifdescr),
 	DEF_CMD("-descr",	0,		unsetifdescr),
+	DEF_CMD("allmulti",	IFF_ALLMULTI,	setifflags),
+	DEF_CMD("-allmulti",	IFF_ALLMULTI,	clearifflags),
 	DEF_CMD("promisc",	IFF_PPROMISC,	setifflags),
 	DEF_CMD("-promisc",	IFF_PPROMISC,	clearifflags),
 	DEF_CMD("add",		IFF_UP,		notealias),
diff --git a/sys/net/if.h b/sys/net/if.h
index bd2787516f01..d6f4b018a1e5 100644
--- a/sys/net/if.h
+++ b/sys/net/if.h
@@ -178,7 +178,7 @@ struct if_data {
 /* flags set internally only: */
 #define	IFF_CANTCHANGE \
 	(IFF_BROADCAST|IFF_POINTOPOINT|IFF_DRV_RUNNING|IFF_DRV_OACTIVE|\
-	    IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC|\
+	    IFF_SIMPLEX|IFF_MULTICAST|IFF_PROMISC|\
 	    IFF_DYING|IFF_CANTCONFIG|IFF_NEEDSEPOCH)
 
 /*