diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h
index 0bbaa54884233..cf26e5aacac49 100644
--- a/include/net/rtnetlink.h
+++ b/include/net/rtnetlink.h
@@ -165,6 +165,7 @@ int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm);
 
 int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len,
 			struct netlink_ext_ack *exterr);
+struct net *rtnl_get_net_ns_capable(struct sock *sk, int netnsid);
 
 #define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
 
diff --git a/include/uapi/linux/if_addr.h b/include/uapi/linux/if_addr.h
index ebaf5701c9db9..dfcf3ce0097fd 100644
--- a/include/uapi/linux/if_addr.h
+++ b/include/uapi/linux/if_addr.h
@@ -34,6 +34,7 @@ enum {
 	IFA_MULTICAST,
 	IFA_FLAGS,
 	IFA_RT_PRIORITY,  /* u32, priority/metric for prefix route */
+	IFA_TARGET_NETNSID,
 	__IFA_MAX,
 };
 
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 43391e2d1153a..29d49b989acd0 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -161,6 +161,7 @@ enum {
 	IFLA_EVENT,
 	IFLA_NEW_NETNSID,
 	IFLA_IF_NETNSID,
+	IFLA_TARGET_NETNSID = IFLA_IF_NETNSID, /* new alias */
 	IFLA_CARRIER_UP_COUNT,
 	IFLA_CARRIER_DOWN_COUNT,
 	IFLA_NEW_IFINDEX,
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 60c928894a786..e4ae0319e1899 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1016,7 +1016,7 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev,
 	       + nla_total_size(4)  /* IFLA_NEW_NETNSID */
 	       + nla_total_size(4)  /* IFLA_NEW_IFINDEX */
 	       + nla_total_size(1)  /* IFLA_PROTO_DOWN */
-	       + nla_total_size(4)  /* IFLA_IF_NETNSID */
+	       + nla_total_size(4)  /* IFLA_TARGET_NETNSID */
 	       + nla_total_size(4)  /* IFLA_CARRIER_UP_COUNT */
 	       + nla_total_size(4)  /* IFLA_CARRIER_DOWN_COUNT */
 	       + nla_total_size(4)  /* IFLA_MIN_MTU */
@@ -1598,7 +1598,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb,
 	ifm->ifi_flags = dev_get_flags(dev);
 	ifm->ifi_change = change;
 
-	if (tgt_netnsid >= 0 && nla_put_s32(skb, IFLA_IF_NETNSID, tgt_netnsid))
+	if (tgt_netnsid >= 0 && nla_put_s32(skb, IFLA_TARGET_NETNSID, tgt_netnsid))
 		goto nla_put_failure;
 
 	if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
@@ -1737,7 +1737,7 @@ static const struct nla_policy ifla_policy[IFLA_MAX+1] = {
 	[IFLA_XDP]		= { .type = NLA_NESTED },
 	[IFLA_EVENT]		= { .type = NLA_U32 },
 	[IFLA_GROUP]		= { .type = NLA_U32 },
-	[IFLA_IF_NETNSID]	= { .type = NLA_S32 },
+	[IFLA_TARGET_NETNSID]	= { .type = NLA_S32 },
 	[IFLA_CARRIER_UP_COUNT]	= { .type = NLA_U32 },
 	[IFLA_CARRIER_DOWN_COUNT] = { .type = NLA_U32 },
 	[IFLA_MIN_MTU]		= { .type = NLA_U32 },
@@ -1845,7 +1845,15 @@ static bool link_dump_filtered(struct net_device *dev,
 	return false;
 }
 
-static struct net *get_target_net(struct sock *sk, int netnsid)
+/**
+ * rtnl_get_net_ns_capable - Get netns if sufficiently privileged.
+ * @sk: netlink socket
+ * @netnsid: network namespace identifier
+ *
+ * Returns the network namespace identified by netnsid on success or an error
+ * pointer on failure.
+ */
+struct net *rtnl_get_net_ns_capable(struct sock *sk, int netnsid)
 {
 	struct net *net;
 
@@ -1862,6 +1870,7 @@ static struct net *get_target_net(struct sock *sk, int netnsid)
 	}
 	return net;
 }
+EXPORT_SYMBOL_GPL(rtnl_get_net_ns_capable);
 
 static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
 {
@@ -1895,9 +1904,9 @@ static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
 
 	if (nlmsg_parse(cb->nlh, hdrlen, tb, IFLA_MAX,
 			ifla_policy, NULL) >= 0) {
-		if (tb[IFLA_IF_NETNSID]) {
-			netnsid = nla_get_s32(tb[IFLA_IF_NETNSID]);
-			tgt_net = get_target_net(skb->sk, netnsid);
+		if (tb[IFLA_TARGET_NETNSID]) {
+			netnsid = nla_get_s32(tb[IFLA_TARGET_NETNSID]);
+			tgt_net = rtnl_get_net_ns_capable(skb->sk, netnsid);
 			if (IS_ERR(tgt_net)) {
 				tgt_net = net;
 				netnsid = -1;
@@ -1984,7 +1993,7 @@ EXPORT_SYMBOL(rtnl_link_get_net);
  *
  * 1. IFLA_NET_NS_PID
  * 2. IFLA_NET_NS_FD
- * 3. IFLA_IF_NETNSID
+ * 3. IFLA_TARGET_NETNSID
  */
 static struct net *rtnl_link_get_net_by_nlattr(struct net *src_net,
 					       struct nlattr *tb[])
@@ -1994,10 +2003,10 @@ static struct net *rtnl_link_get_net_by_nlattr(struct net *src_net,
 	if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD])
 		return rtnl_link_get_net(src_net, tb);
 
-	if (!tb[IFLA_IF_NETNSID])
+	if (!tb[IFLA_TARGET_NETNSID])
 		return get_net(src_net);
 
-	net = get_net_ns_by_id(src_net, nla_get_u32(tb[IFLA_IF_NETNSID]));
+	net = get_net_ns_by_id(src_net, nla_get_u32(tb[IFLA_TARGET_NETNSID]));
 	if (!net)
 		return ERR_PTR(-EINVAL);
 
@@ -2038,13 +2047,13 @@ static int rtnl_ensure_unique_netns(struct nlattr *tb[],
 		return -EOPNOTSUPP;
 	}
 
-	if (tb[IFLA_IF_NETNSID] && (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]))
+	if (tb[IFLA_TARGET_NETNSID] && (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]))
 		goto invalid_attr;
 
-	if (tb[IFLA_NET_NS_PID] && (tb[IFLA_IF_NETNSID] || tb[IFLA_NET_NS_FD]))
+	if (tb[IFLA_NET_NS_PID] && (tb[IFLA_TARGET_NETNSID] || tb[IFLA_NET_NS_FD]))
 		goto invalid_attr;
 
-	if (tb[IFLA_NET_NS_FD] && (tb[IFLA_IF_NETNSID] || tb[IFLA_NET_NS_PID]))
+	if (tb[IFLA_NET_NS_FD] && (tb[IFLA_TARGET_NETNSID] || tb[IFLA_NET_NS_PID]))
 		goto invalid_attr;
 
 	return 0;
@@ -2320,7 +2329,7 @@ static int do_setlink(const struct sk_buff *skb,
 	if (err < 0)
 		return err;
 
-	if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD] || tb[IFLA_IF_NETNSID]) {
+	if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD] || tb[IFLA_TARGET_NETNSID]) {
 		struct net *net = rtnl_link_get_net_capable(skb, dev_net(dev),
 							    tb, CAP_NET_ADMIN);
 		if (IS_ERR(net)) {
@@ -2763,9 +2772,9 @@ static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh,
 	if (tb[IFLA_IFNAME])
 		nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
 
-	if (tb[IFLA_IF_NETNSID]) {
-		netnsid = nla_get_s32(tb[IFLA_IF_NETNSID]);
-		tgt_net = get_target_net(NETLINK_CB(skb).sk, netnsid);
+	if (tb[IFLA_TARGET_NETNSID]) {
+		netnsid = nla_get_s32(tb[IFLA_TARGET_NETNSID]);
+		tgt_net = rtnl_get_net_ns_capable(NETLINK_CB(skb).sk, netnsid);
 		if (IS_ERR(tgt_net))
 			return PTR_ERR(tgt_net);
 	}
@@ -3173,9 +3182,9 @@ static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr *nlh,
 	if (err < 0)
 		return err;
 
-	if (tb[IFLA_IF_NETNSID]) {
-		netnsid = nla_get_s32(tb[IFLA_IF_NETNSID]);
-		tgt_net = get_target_net(NETLINK_CB(skb).sk, netnsid);
+	if (tb[IFLA_TARGET_NETNSID]) {
+		netnsid = nla_get_s32(tb[IFLA_TARGET_NETNSID]);
+		tgt_net = rtnl_get_net_ns_capable(NETLINK_CB(skb).sk, netnsid);
 		if (IS_ERR(tgt_net))
 			return PTR_ERR(tgt_net);
 	}
@@ -3260,13 +3269,13 @@ static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb)
 {
 	int idx;
 	int s_idx = cb->family;
+	int type = cb->nlh->nlmsg_type - RTM_BASE;
 
 	if (s_idx == 0)
 		s_idx = 1;
 
 	for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) {
 		struct rtnl_link **tab;
-		int type = cb->nlh->nlmsg_type-RTM_BASE;
 		struct rtnl_link *link;
 		rtnl_dumpit_func dumpit;
 
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index ea4bd8a52422e..44d931a3cd50c 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -100,6 +100,15 @@ static const struct nla_policy ifa_ipv4_policy[IFA_MAX+1] = {
 	[IFA_CACHEINFO]		= { .len = sizeof(struct ifa_cacheinfo) },
 	[IFA_FLAGS]		= { .type = NLA_U32 },
 	[IFA_RT_PRIORITY]	= { .type = NLA_U32 },
+	[IFA_TARGET_NETNSID]	= { .type = NLA_S32 },
+};
+
+struct inet_fill_args {
+	u32 portid;
+	u32 seq;
+	int event;
+	unsigned int flags;
+	int netnsid;
 };
 
 #define IN4_ADDR_HSIZE_SHIFT	8
@@ -1584,13 +1593,14 @@ static int put_cacheinfo(struct sk_buff *skb, unsigned long cstamp,
 }
 
 static int inet_fill_ifaddr(struct sk_buff *skb, struct in_ifaddr *ifa,
-			    u32 portid, u32 seq, int event, unsigned int flags)
+			    struct inet_fill_args *args)
 {
 	struct ifaddrmsg *ifm;
 	struct nlmsghdr  *nlh;
 	u32 preferred, valid;
 
-	nlh = nlmsg_put(skb, portid, seq, event, sizeof(*ifm), flags);
+	nlh = nlmsg_put(skb, args->portid, args->seq, args->event, sizeof(*ifm),
+			args->flags);
 	if (!nlh)
 		return -EMSGSIZE;
 
@@ -1601,6 +1611,10 @@ static int inet_fill_ifaddr(struct sk_buff *skb, struct in_ifaddr *ifa,
 	ifm->ifa_scope = ifa->ifa_scope;
 	ifm->ifa_index = ifa->ifa_dev->dev->ifindex;
 
+	if (args->netnsid >= 0 &&
+	    nla_put_s32(skb, IFA_TARGET_NETNSID, args->netnsid))
+		goto nla_put_failure;
+
 	if (!(ifm->ifa_flags & IFA_F_PERMANENT)) {
 		preferred = ifa->ifa_preferred_lft;
 		valid = ifa->ifa_valid_lft;
@@ -1647,7 +1661,16 @@ static int inet_fill_ifaddr(struct sk_buff *skb, struct in_ifaddr *ifa,
 
 static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
 {
+	struct inet_fill_args fillargs = {
+		.portid = NETLINK_CB(cb->skb).portid,
+		.seq = cb->nlh->nlmsg_seq,
+		.event = RTM_NEWADDR,
+		.flags = NLM_F_MULTI,
+		.netnsid = -1,
+	};
 	struct net *net = sock_net(skb->sk);
+	struct nlattr *tb[IFA_MAX+1];
+	struct net *tgt_net = net;
 	int h, s_h;
 	int idx, s_idx;
 	int ip_idx, s_ip_idx;
@@ -1660,12 +1683,24 @@ static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
 	s_idx = idx = cb->args[1];
 	s_ip_idx = ip_idx = cb->args[2];
 
+	if (nlmsg_parse(cb->nlh, sizeof(struct ifaddrmsg), tb, IFA_MAX,
+			ifa_ipv4_policy, NULL) >= 0) {
+		if (tb[IFA_TARGET_NETNSID]) {
+			fillargs.netnsid = nla_get_s32(tb[IFA_TARGET_NETNSID]);
+
+			tgt_net = rtnl_get_net_ns_capable(skb->sk,
+							  fillargs.netnsid);
+			if (IS_ERR(tgt_net))
+				return PTR_ERR(tgt_net);
+		}
+	}
+
 	for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
 		idx = 0;
-		head = &net->dev_index_head[h];
+		head = &tgt_net->dev_index_head[h];
 		rcu_read_lock();
-		cb->seq = atomic_read(&net->ipv4.dev_addr_genid) ^
-			  net->dev_base_seq;
+		cb->seq = atomic_read(&tgt_net->ipv4.dev_addr_genid) ^
+			  tgt_net->dev_base_seq;
 		hlist_for_each_entry_rcu(dev, head, index_hlist) {
 			if (idx < s_idx)
 				goto cont;
@@ -1679,10 +1714,7 @@ static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
 			     ifa = ifa->ifa_next, ip_idx++) {
 				if (ip_idx < s_ip_idx)
 					continue;
-				if (inet_fill_ifaddr(skb, ifa,
-					     NETLINK_CB(cb->skb).portid,
-					     cb->nlh->nlmsg_seq,
-					     RTM_NEWADDR, NLM_F_MULTI) < 0) {
+				if (inet_fill_ifaddr(skb, ifa, &fillargs) < 0) {
 					rcu_read_unlock();
 					goto done;
 				}
@@ -1698,6 +1730,8 @@ static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
 	cb->args[0] = h;
 	cb->args[1] = idx;
 	cb->args[2] = ip_idx;
+	if (fillargs.netnsid >= 0)
+		put_net(tgt_net);
 
 	return skb->len;
 }
@@ -1705,8 +1739,14 @@ static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
 static void rtmsg_ifa(int event, struct in_ifaddr *ifa, struct nlmsghdr *nlh,
 		      u32 portid)
 {
+	struct inet_fill_args fillargs = {
+		.portid = portid,
+		.seq = nlh ? nlh->nlmsg_seq : 0,
+		.event = event,
+		.flags = 0,
+		.netnsid = -1,
+	};
 	struct sk_buff *skb;
-	u32 seq = nlh ? nlh->nlmsg_seq : 0;
 	int err = -ENOBUFS;
 	struct net *net;
 
@@ -1715,7 +1755,7 @@ static void rtmsg_ifa(int event, struct in_ifaddr *ifa, struct nlmsghdr *nlh,
 	if (!skb)
 		goto errout;
 
-	err = inet_fill_ifaddr(skb, ifa, portid, seq, event, 0);
+	err = inet_fill_ifaddr(skb, ifa, &fillargs);
 	if (err < 0) {
 		/* -EMSGSIZE implies BUG in inet_nlmsg_size() */
 		WARN_ON(err == -EMSGSIZE);
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index d51a8c0b3372d..d4733160e6b76 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -4491,6 +4491,7 @@ static const struct nla_policy ifa_ipv6_policy[IFA_MAX+1] = {
 	[IFA_CACHEINFO]		= { .len = sizeof(struct ifa_cacheinfo) },
 	[IFA_FLAGS]		= { .len = sizeof(u32) },
 	[IFA_RT_PRIORITY]	= { .len = sizeof(u32) },
+	[IFA_TARGET_NETNSID]	= { .type = NLA_S32 },
 };
 
 static int
@@ -4793,19 +4794,32 @@ static inline int inet6_ifaddr_msgsize(void)
 	       + nla_total_size(4)  /* IFA_RT_PRIORITY */;
 }
 
+struct inet6_fill_args {
+	u32 portid;
+	u32 seq;
+	int event;
+	unsigned int flags;
+	int netnsid;
+};
+
 static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
-			     u32 portid, u32 seq, int event, unsigned int flags)
+			     struct inet6_fill_args *args)
 {
 	struct nlmsghdr  *nlh;
 	u32 preferred, valid;
 
-	nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags);
+	nlh = nlmsg_put(skb, args->portid, args->seq, args->event,
+			sizeof(struct ifaddrmsg), args->flags);
 	if (!nlh)
 		return -EMSGSIZE;
 
 	put_ifaddrmsg(nlh, ifa->prefix_len, ifa->flags, rt_scope(ifa->scope),
 		      ifa->idev->dev->ifindex);
 
+	if (args->netnsid >= 0 &&
+	    nla_put_s32(skb, IFA_TARGET_NETNSID, args->netnsid))
+		goto error;
+
 	if (!((ifa->flags&IFA_F_PERMANENT) &&
 	      (ifa->prefered_lft == INFINITY_LIFE_TIME))) {
 		preferred = ifa->prefered_lft;
@@ -4855,7 +4869,7 @@ static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
 }
 
 static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
-				u32 portid, u32 seq, int event, u16 flags)
+			       struct inet6_fill_args *args)
 {
 	struct nlmsghdr  *nlh;
 	u8 scope = RT_SCOPE_UNIVERSE;
@@ -4864,10 +4878,15 @@ static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
 	if (ipv6_addr_scope(&ifmca->mca_addr) & IFA_SITE)
 		scope = RT_SCOPE_SITE;
 
-	nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags);
+	nlh = nlmsg_put(skb, args->portid, args->seq, args->event,
+			sizeof(struct ifaddrmsg), args->flags);
 	if (!nlh)
 		return -EMSGSIZE;
 
+	if (args->netnsid >= 0 &&
+	    nla_put_s32(skb, IFA_TARGET_NETNSID, args->netnsid))
+		return -EMSGSIZE;
+
 	put_ifaddrmsg(nlh, 128, IFA_F_PERMANENT, scope, ifindex);
 	if (nla_put_in6_addr(skb, IFA_MULTICAST, &ifmca->mca_addr) < 0 ||
 	    put_cacheinfo(skb, ifmca->mca_cstamp, ifmca->mca_tstamp,
@@ -4881,7 +4900,7 @@ static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
 }
 
 static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca,
-				u32 portid, u32 seq, int event, unsigned int flags)
+			       struct inet6_fill_args *args)
 {
 	struct net_device *dev = fib6_info_nh_dev(ifaca->aca_rt);
 	int ifindex = dev ? dev->ifindex : 1;
@@ -4891,10 +4910,15 @@ static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca,
 	if (ipv6_addr_scope(&ifaca->aca_addr) & IFA_SITE)
 		scope = RT_SCOPE_SITE;
 
-	nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags);
+	nlh = nlmsg_put(skb, args->portid, args->seq, args->event,
+			sizeof(struct ifaddrmsg), args->flags);
 	if (!nlh)
 		return -EMSGSIZE;
 
+	if (args->netnsid >= 0 &&
+	    nla_put_s32(skb, IFA_TARGET_NETNSID, args->netnsid))
+		return -EMSGSIZE;
+
 	put_ifaddrmsg(nlh, 128, IFA_F_PERMANENT, scope, ifindex);
 	if (nla_put_in6_addr(skb, IFA_ANYCAST, &ifaca->aca_addr) < 0 ||
 	    put_cacheinfo(skb, ifaca->aca_cstamp, ifaca->aca_tstamp,
@@ -4916,8 +4940,14 @@ enum addr_type_t {
 /* called with rcu_read_lock() */
 static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
 			  struct netlink_callback *cb, enum addr_type_t type,
-			  int s_ip_idx, int *p_ip_idx)
+			  int s_ip_idx, int *p_ip_idx, int netnsid)
 {
+	struct inet6_fill_args fillargs = {
+		.portid = NETLINK_CB(cb->skb).portid,
+		.seq = cb->nlh->nlmsg_seq,
+		.flags = NLM_F_MULTI,
+		.netnsid = netnsid,
+	};
 	struct ifmcaddr6 *ifmca;
 	struct ifacaddr6 *ifaca;
 	int err = 1;
@@ -4927,16 +4957,13 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
 	switch (type) {
 	case UNICAST_ADDR: {
 		struct inet6_ifaddr *ifa;
+		fillargs.event = RTM_NEWADDR;
 
 		/* unicast address incl. temp addr */
 		list_for_each_entry(ifa, &idev->addr_list, if_list) {
 			if (++ip_idx < s_ip_idx)
 				continue;
-			err = inet6_fill_ifaddr(skb, ifa,
-						NETLINK_CB(cb->skb).portid,
-						cb->nlh->nlmsg_seq,
-						RTM_NEWADDR,
-						NLM_F_MULTI);
+			err = inet6_fill_ifaddr(skb, ifa, &fillargs);
 			if (err < 0)
 				break;
 			nl_dump_check_consistent(cb, nlmsg_hdr(skb));
@@ -4944,31 +4971,26 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
 		break;
 	}
 	case MULTICAST_ADDR:
+		fillargs.event = RTM_GETMULTICAST;
+
 		/* multicast address */
 		for (ifmca = idev->mc_list; ifmca;
 		     ifmca = ifmca->next, ip_idx++) {
 			if (ip_idx < s_ip_idx)
 				continue;
-			err = inet6_fill_ifmcaddr(skb, ifmca,
-						  NETLINK_CB(cb->skb).portid,
-						  cb->nlh->nlmsg_seq,
-						  RTM_GETMULTICAST,
-						  NLM_F_MULTI);
+			err = inet6_fill_ifmcaddr(skb, ifmca, &fillargs);
 			if (err < 0)
 				break;
 		}
 		break;
 	case ANYCAST_ADDR:
+		fillargs.event = RTM_GETANYCAST;
 		/* anycast address */
 		for (ifaca = idev->ac_list; ifaca;
 		     ifaca = ifaca->aca_next, ip_idx++) {
 			if (ip_idx < s_ip_idx)
 				continue;
-			err = inet6_fill_ifacaddr(skb, ifaca,
-						  NETLINK_CB(cb->skb).portid,
-						  cb->nlh->nlmsg_seq,
-						  RTM_GETANYCAST,
-						  NLM_F_MULTI);
+			err = inet6_fill_ifacaddr(skb, ifaca, &fillargs);
 			if (err < 0)
 				break;
 		}
@@ -4985,6 +5007,9 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
 			   enum addr_type_t type)
 {
 	struct net *net = sock_net(skb->sk);
+	struct nlattr *tb[IFA_MAX+1];
+	struct net *tgt_net = net;
+	int netnsid = -1;
 	int h, s_h;
 	int idx, ip_idx;
 	int s_idx, s_ip_idx;
@@ -4996,11 +5021,22 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
 	s_idx = idx = cb->args[1];
 	s_ip_idx = ip_idx = cb->args[2];
 
+	if (nlmsg_parse(cb->nlh, sizeof(struct ifaddrmsg), tb, IFA_MAX,
+			ifa_ipv6_policy, NULL) >= 0) {
+		if (tb[IFA_TARGET_NETNSID]) {
+			netnsid = nla_get_s32(tb[IFA_TARGET_NETNSID]);
+
+			tgt_net = rtnl_get_net_ns_capable(skb->sk, netnsid);
+			if (IS_ERR(tgt_net))
+				return PTR_ERR(tgt_net);
+		}
+	}
+
 	rcu_read_lock();
-	cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^ net->dev_base_seq;
+	cb->seq = atomic_read(&tgt_net->ipv6.dev_addr_genid) ^ tgt_net->dev_base_seq;
 	for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
 		idx = 0;
-		head = &net->dev_index_head[h];
+		head = &tgt_net->dev_index_head[h];
 		hlist_for_each_entry_rcu(dev, head, index_hlist) {
 			if (idx < s_idx)
 				goto cont;
@@ -5012,7 +5048,7 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
 				goto cont;
 
 			if (in6_dump_addrs(idev, skb, cb, type,
-					   s_ip_idx, &ip_idx) < 0)
+					   s_ip_idx, &ip_idx, netnsid) < 0)
 				goto done;
 cont:
 			idx++;
@@ -5023,6 +5059,8 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
 	cb->args[0] = h;
 	cb->args[1] = idx;
 	cb->args[2] = ip_idx;
+	if (netnsid >= 0)
+		put_net(tgt_net);
 
 	return skb->len;
 }
@@ -5053,6 +5091,14 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh,
 			     struct netlink_ext_ack *extack)
 {
 	struct net *net = sock_net(in_skb->sk);
+	struct inet6_fill_args fillargs = {
+		.portid = NETLINK_CB(in_skb).portid,
+		.seq = nlh->nlmsg_seq,
+		.event = RTM_NEWADDR,
+		.flags = 0,
+		.netnsid = -1,
+	};
+	struct net *tgt_net = net;
 	struct ifaddrmsg *ifm;
 	struct nlattr *tb[IFA_MAX+1];
 	struct in6_addr *addr = NULL, *peer;
@@ -5066,15 +5112,24 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh,
 	if (err < 0)
 		return err;
 
+	if (tb[IFA_TARGET_NETNSID]) {
+		fillargs.netnsid = nla_get_s32(tb[IFA_TARGET_NETNSID]);
+
+		tgt_net = rtnl_get_net_ns_capable(NETLINK_CB(in_skb).sk,
+						  fillargs.netnsid);
+		if (IS_ERR(tgt_net))
+			return PTR_ERR(tgt_net);
+	}
+
 	addr = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer);
 	if (!addr)
 		return -EINVAL;
 
 	ifm = nlmsg_data(nlh);
 	if (ifm->ifa_index)
-		dev = dev_get_by_index(net, ifm->ifa_index);
+		dev = dev_get_by_index(tgt_net, ifm->ifa_index);
 
-	ifa = ipv6_get_ifaddr(net, addr, dev, 1);
+	ifa = ipv6_get_ifaddr(tgt_net, addr, dev, 1);
 	if (!ifa) {
 		err = -EADDRNOTAVAIL;
 		goto errout;
@@ -5086,20 +5141,22 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh,
 		goto errout_ifa;
 	}
 
-	err = inet6_fill_ifaddr(skb, ifa, NETLINK_CB(in_skb).portid,
-				nlh->nlmsg_seq, RTM_NEWADDR, 0);
+	err = inet6_fill_ifaddr(skb, ifa, &fillargs);
 	if (err < 0) {
 		/* -EMSGSIZE implies BUG in inet6_ifaddr_msgsize() */
 		WARN_ON(err == -EMSGSIZE);
 		kfree_skb(skb);
 		goto errout_ifa;
 	}
-	err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid);
+	err = rtnl_unicast(skb, tgt_net, NETLINK_CB(in_skb).portid);
 errout_ifa:
 	in6_ifa_put(ifa);
 errout:
 	if (dev)
 		dev_put(dev);
+	if (fillargs.netnsid >= 0)
+		put_net(tgt_net);
+
 	return err;
 }
 
@@ -5107,13 +5164,20 @@ static void inet6_ifa_notify(int event, struct inet6_ifaddr *ifa)
 {
 	struct sk_buff *skb;
 	struct net *net = dev_net(ifa->idev->dev);
+	struct inet6_fill_args fillargs = {
+		.portid = 0,
+		.seq = 0,
+		.event = event,
+		.flags = 0,
+		.netnsid = -1,
+	};
 	int err = -ENOBUFS;
 
 	skb = nlmsg_new(inet6_ifaddr_msgsize(), GFP_ATOMIC);
 	if (!skb)
 		goto errout;
 
-	err = inet6_fill_ifaddr(skb, ifa, 0, 0, event, 0);
+	err = inet6_fill_ifaddr(skb, ifa, &fillargs);
 	if (err < 0) {
 		/* -EMSGSIZE implies BUG in inet6_ifaddr_msgsize() */
 		WARN_ON(err == -EMSGSIZE);
diff --git a/tools/include/uapi/linux/if_link.h b/tools/include/uapi/linux/if_link.h
index cf01b68242448..1c73d63068b16 100644
--- a/tools/include/uapi/linux/if_link.h
+++ b/tools/include/uapi/linux/if_link.h
@@ -161,6 +161,7 @@ enum {
 	IFLA_EVENT,
 	IFLA_NEW_NETNSID,
 	IFLA_IF_NETNSID,
+	IFLA_TARGET_NETNSID = IFLA_IF_NETNSID, /* new alias */
 	IFLA_CARRIER_UP_COUNT,
 	IFLA_CARRIER_DOWN_COUNT,
 	IFLA_NEW_IFINDEX,