IceGridRegistry Occur ‘WSAENOBUFS' SocketException

Hello, everyone!

I have a problem with icegridregistry.exe.
My OS System is Windows2012, ICE Version is 3.5.1. When My System have run for serveral hours, the icegridregistry can't accept any new connection. (For exaple, IceGridGUI.jar).
I have opened the trace log. There were many socket excptions. The Socket error is the 'WSAENOBUFS'.
Could anyone tell me why? How can I slove this?

-- 06/09/16 16:35:22.893 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Network: trying to establish tcp connection to 10.45.194.221:52026
-- 06/09/16 16:35:22.893 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Retry: connection to endpoint failed and no more endpoints to try
Network.cpp:1329: Ice::SocketException:
socket exception: WSAENOBUFS
-- 06/09/16 16:35:22.893 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Retry: retrying operation call because of exception
Network.cpp:1329: Ice::SocketException:
socket exception: WSAENOBUFS
-- 06/09/16 16:35:22.893 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Network: trying to establish tcp connection to 10.45.194.221:52026
-- 06/09/16 16:35:22.893 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Retry: connection to endpoint failed and no more endpoints to try
Network.cpp:1329: Ice::SocketException:
socket exception: WSAENOBUFS
-- 06/09/16 16:35:22.893 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Retry: cannot retry operation call because retry limit has been exceeded
Network.cpp:1329: Ice::SocketException:
socket exception: WSAENOBUFS
-- 06/09/16 16:35:22.893 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Protocol: sending reply
message type = 2 (reply)
compression status = 0 (not compressed; do not compress response, if any)
message size = 27
request id = 4950
reply status = 0 (ok)
-- 06/09/16 16:35:22.893 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Network: sent 27 of 27 bytes via tcp
local address = 10.45.194.221:52001
remote address = 10.45.194.220:55230
-- 06/09/16 16:35:22.909 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Network: received 14 of 14 bytes via tcp
local address = 10.45.194.221:52001
remote address = 10.45.194.220:55230
-- 06/09/16 16:35:22.909 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Network: received 79 of 79 bytes via tcp
local address = 10.45.194.221:52001
remote address = 10.45.194.220:55230
-- 06/09/16 16:35:22.909 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Protocol: received request
message type = 0 (request)
compression status = 0 (not compressed; do not compress response, if any)
message size = 93
request id = 4951
identity = UnmBusIceGrid/Locator
facet =
operation = findObjectById
mode = 2 (idempotent)
context =
-- 06/09/16 16:35:22.909 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Network: trying to establish tcp connection to 10.45.194.221:52026
-- 06/09/16 16:35:22.909 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Retry: connection to endpoint failed and no more endpoints to try
Network.cpp:1329: Ice::SocketException:
socket exception: WSAENOBUFS
-- 06/09/16 16:35:22.909 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Retry: retrying operation call because of exception
Network.cpp:1329: Ice::SocketException:
socket exception: WSAENOBUFS
-- 06/09/16 16:35:22.909 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Network: trying to establish tcp connection to 10.45.194.221:52026
-- 06/09/16 16:35:22.909 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Retry: connection to endpoint failed and no more endpoints to try
Network.cpp:1329: Ice::SocketException:
socket exception: WSAENOBUFS
-- 06/09/16 16:35:22.909 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Retry: cannot retry operation call because retry limit has been exceeded
Network.cpp:1329: Ice::SocketException:
socket exception: WSAENOBUFS
-- 06/09/16 16:35:22.909 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Protocol: sending reply
message type = 2 (reply)
compression status = 0 (not compressed; do not compress response, if any)
message size = 126
request id = 4951
reply status = 0 (ok)
-- 06/09/16 16:35:22.909 E:/unm2000/platform/thirdparty/win32_vc9_x86/bin/icegridregistry.exe: Network: sent 126 of 126 bytes via tcp
local address = 10.45.194.221:52001
remote address = 10.45.194.220:55230