On restarting sametime gateway ,getting following error on gateway for openfire server

Hi All,

We have a setup of Sametime gateway and Open fire in out lab .Such that

Sametime community server --Sametime Gateway --Openfire--CUP

(10.78.171.123)                      (10.78.171.122)          (10.78.171.83)

When we try to  restart Sametime Gateway we found following error in wireshark traces :

<s tream:error xmln s:stream="http://etherx.jabber.o rg/streams"><hos t -unknown xmlns ="urn:ietf:params :xml:ns:xmpp-str eams"/></stream: error>

Can anyone help me on this?

Regards

Richa