diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 2be8d6b0dfb6..8ec77bfdc1a4 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -204,7 +204,6 @@ struct neigh_table {
 	int			(*pconstructor)(struct pneigh_entry *);
 	void			(*pdestructor)(struct pneigh_entry *);
 	void			(*proxy_redo)(struct sk_buff *skb);
-	int			(*is_multicast)(const void *pkey);
 	bool			(*allow_add)(const struct net_device *dev,
 					     struct netlink_ext_ack *extack);
 	char			*id;
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 6c270fce200f..04953e5f2530 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -235,8 +235,6 @@ static int neigh_forced_gc(struct neigh_table *tbl)
 
 			write_lock(&n->lock);
 			if ((n->nud_state == NUD_FAILED) ||
-			    (tbl->is_multicast &&
-			     tbl->is_multicast(n->primary_key)) ||
 			    time_after(tref, n->updated))
 				remove = true;
 			write_unlock(&n->lock);
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 7b951992c372..05eb42f347e8 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -125,7 +125,6 @@ static int arp_constructor(struct neighbour *neigh);
 static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb);
 static void arp_error_report(struct neighbour *neigh, struct sk_buff *skb);
 static void parp_redo(struct sk_buff *skb);
-static int arp_is_multicast(const void *pkey);
 
 static const struct neigh_ops arp_generic_ops = {
 	.family =		AF_INET,
@@ -157,7 +156,6 @@ struct neigh_table arp_tbl = {
 	.key_eq		= arp_key_eq,
 	.constructor	= arp_constructor,
 	.proxy_redo	= parp_redo,
-	.is_multicast	= arp_is_multicast,
 	.id		= "arp_cache",
 	.parms		= {
 		.tbl			= &arp_tbl,
@@ -930,10 +928,6 @@ static void parp_redo(struct sk_buff *skb)
 	arp_process(dev_net(skb->dev), NULL, skb);
 }
 
-static int arp_is_multicast(const void *pkey)
-{
-	return ipv4_is_multicast(*((__be32 *)pkey));
-}
 
 /*
  *	Receive an arp request from the device layer.
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 455ef8498439..945ef37eab9d 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -81,7 +81,6 @@ static void ndisc_error_report(struct neighbour *neigh, struct sk_buff *skb);
 static int pndisc_constructor(struct pneigh_entry *n);
 static void pndisc_destructor(struct pneigh_entry *n);
 static void pndisc_redo(struct sk_buff *skb);
-static int ndisc_is_multicast(const void *pkey);
 
 static const struct neigh_ops ndisc_generic_ops = {
 	.family =		AF_INET6,
@@ -116,7 +115,6 @@ struct neigh_table nd_tbl = {
 	.pconstructor =	pndisc_constructor,
 	.pdestructor =	pndisc_destructor,
 	.proxy_redo =	pndisc_redo,
-	.is_multicast =	ndisc_is_multicast,
 	.allow_add  =   ndisc_allow_add,
 	.id =		"ndisc_cache",
 	.parms = {
@@ -1708,11 +1706,6 @@ static void pndisc_redo(struct sk_buff *skb)
 	kfree_skb(skb);
 }
 
-static int ndisc_is_multicast(const void *pkey)
-{
-	return ipv6_addr_is_multicast((struct in6_addr *)pkey);
-}
-
 static bool ndisc_suppress_frag_ndisc(struct sk_buff *skb)
 {
 	struct inet6_dev *idev = __in6_dev_get(skb->dev);