Test machine network interface was set 1 IPv4 address and 2 IPv6 address
#ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:11:11:1A:8C:50
          inet addr:10.133.132.28 Bcast:10.133.135.255 Mask:255.255.248.0
          inet6 addr: 2001:0:1:301:211:11ff:fe1a:8c50/64 Scope:Global
          inet6 addr: fe80::211:11ff:fe1a:8c50/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:359892941 errors:0 dropped:0 overruns:0 frame:0
          TX packets:250521856 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1672147871 (1.5 GiB) TX bytes:3859550832 (3.5 GiB)
We have regression test jdk/test/com/sun/nio/sctp/SctpMultiChannel/SocketOptionTests.java,
        Set<SocketAddress> peerAddrs = peerChannel.getAllLocalAddresses();
        debug("Peer local Addresses: ");
        for (Iterator<SocketAddress> it = peerAddrs.iterator(); it.hasNext(); ) {
            InetSocketAddress addr = (InetSocketAddress)it.next();
            debug("\t" + addr);
            addrToSet = addr; // any of the peer addresses will do!
        }
always return only one address, output is as follows
Peer local Addresses:
        /2001:0:1:301:211:11ff:fe1a:8c50%2:44396