diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 7797d52..db3bf9b 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -544,6 +544,7 @@
 #ifdef CONFIG_TCP_MD5SIG
 	struct tcp_md5sig_key *key;
 #endif
+	struct net *net;
 
 	/* Never send a reset in response to a reset. */
 	if (th->rst)
@@ -594,7 +595,8 @@
 				      sizeof(struct tcphdr), IPPROTO_TCP, 0);
 	arg.csumoffset = offsetof(struct tcphdr, check) / 2;
 
-	ip_send_reply(dev_net(skb->dst->dev)->ipv4.tcp_sock, skb,
+	net = dev_net(skb->dst->dev);
+	ip_send_reply(net->ipv4.tcp_sock, skb,
 		      &arg, arg.iov[0].iov_len);
 
 	TCP_INC_STATS_BH(TCP_MIB_OUTSEGS);
@@ -619,6 +621,7 @@
 			];
 	} rep;
 	struct ip_reply_arg arg;
+	struct net *net = dev_net(skb->dev);
 
 	memset(&rep.th, 0, sizeof(struct tcphdr));
 	memset(&arg, 0, sizeof(arg));
@@ -668,7 +671,7 @@
 	if (oif)
 		arg.bound_dev_if = oif;
 
-	ip_send_reply(dev_net(skb->dev)->ipv4.tcp_sock, skb,
+	ip_send_reply(net->ipv4.tcp_sock, skb,
 		      &arg, arg.iov[0].iov_len);
 
 	TCP_INC_STATS_BH(TCP_MIB_OUTSEGS);
@@ -1505,6 +1508,7 @@
 	struct tcphdr *th;
 	struct sock *sk;
 	int ret;
+	struct net *net = dev_net(skb->dev);
 
 	if (skb->pkt_type != PACKET_HOST)
 		goto discard_it;
@@ -1539,7 +1543,7 @@
 	TCP_SKB_CB(skb)->flags	 = iph->tos;
 	TCP_SKB_CB(skb)->sacked	 = 0;
 
-	sk = __inet_lookup(dev_net(skb->dev), &tcp_hashinfo, iph->saddr,
+	sk = __inet_lookup(net, &tcp_hashinfo, iph->saddr,
 			th->source, iph->daddr, th->dest, inet_iif(skb));
 	if (!sk)
 		goto no_tcp_socket;
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 30dbab7..fc5f716 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1617,6 +1617,7 @@
 	struct tcphdr *th;
 	struct sock *sk;
 	int ret;
+	struct net *net = dev_net(skb->dev);
 
 	if (skb->pkt_type != PACKET_HOST)
 		goto discard_it;
@@ -1648,7 +1649,7 @@
 	TCP_SKB_CB(skb)->flags = ipv6_get_dsfield(ipv6_hdr(skb));
 	TCP_SKB_CB(skb)->sacked = 0;
 
-	sk = __inet6_lookup(dev_net(skb->dev), &tcp_hashinfo,
+	sk = __inet6_lookup(net, &tcp_hashinfo,
 			&ipv6_hdr(skb)->saddr, th->source,
 			&ipv6_hdr(skb)->daddr, ntohs(th->dest),
 			inet6_iif(skb));