[SCTP]: Correctly set daddr for IPv6 sockets during peeloff

During peeloff of AF_INET6 socket, the inet6_sk(sk)->daddr
wasn't set correctly since the code was assuming IPv4 only.
Now we use a correct call to set the destination address.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Acked-by: Sridhar Samudrala <sri@us.ibm.com>

net/sctp/socket.c

@@ -3550,6 +3550,7 @@ SCTP_STATIC int sctp_do_peeloff(struct sctp_association *asoc,
 	struct sock *sk = asoc->base.sk;
 	struct socket *sock;
 	struct inet_sock *inetsk;
+	struct sctp_af *af;
 	int err = 0;
 
 	/* An association cannot be branched off from an already peeled-off
@@ -3571,8 +3572,9 @@ SCTP_STATIC int sctp_do_peeloff(struct sctp_association *asoc,
 	/* Make peeled-off sockets more like 1-1 accepted sockets.
 	 * Set the daddr and initialize id to something more random
 	 */
+	af = sctp_get_af_specific(asoc->peer.primary_addr.sa.sa_family);
+	af->to_sk_daddr(&asoc->peer.primary_addr, sk);
 	inetsk = inet_sk(sock->sk);
-	inetsk->daddr = asoc->peer.primary_addr.v4.sin_addr.s_addr;
 	inetsk->id = asoc->next_tsn ^ jiffies;
 
 	*sockp = sock;