Openfire installation

when,I installed openfire in server which has 2 ip public ,I had the following exception:

org.jivesoftware.openfire.stun.STUNService.startLocalServer(STUNService.java:161 )] Disabling STUN server
java.net.BindException: Cannot assign requested address
at java.net.PlainDatagramSocketImpl.bind0(Native Method)
at java.net.PlainDatagramSocketImpl.bind(PlainDatagramSocketImpl.java:82)
at java.net.DatagramSocket.bind(DatagramSocket.java:368)
at java.net.DatagramSocket.(DatagramSocket.java:210)
at java.net.DatagramSocket.(DatagramSocket.java:261)
at de.javawi.jstun.test.demo.StunServer.(StunServer.java:30)
at org.jivesoftware.openfire.stun.STUNService.startLocalServer(STUNService.java:15 4)
at org.jivesoftware.openfire.stun.STUNService.start(STUNService.java:143)
at org.jivesoftware.openfire.XMPPServer.startModules(XMPPServer.java:569)
at org.jivesoftware.openfire.XMPPServer.access$500(XMPPServer.java:97)
at org.jivesoftware.openfire.XMPPServer$1.run(XMPPServer.java:393)

plz, I need a help