I did a partial test. - The multicast issue seems to be fixed. - Cygwin still fails miserably Test results as follows ---- snip ---- Test Report rsrvbindiface on Windows 7 - ONLY PARTIAL TEST Test Plan https://wiki-ext.aps.anl.gov/epics/index.php/RSRV_Configuration_Test_Plan Version 2016-02-16T14:44 Tested 2016-02-26T20:00 by Ralph duration 1.5 hrs Version lp:~epics-core/epics-base/rsrvbindiface revision 12765 plus commit 12716..12717 from lp:~epics-core/epics-base/3.15 Targets MSVC 12.0 (amd64), MSVC (x86), Cygwin (x86_64), MinGW32 (x86) dynamic builds Machine Latitude E7240 (intel i3) running Windows 7 Test #1 Defaults MSVC 64 MSVC 32 Cygwin MinGW32 starting second IOC pass pass pass pass client get pass pass pass pass epicsParamShow pass pass pass pass casr 1 pass pass pass pass dbcar "" 8 pass pass pass pass Note on Cygwin: - warning at boot time Warning: Duplicate EPICS CA Address list entry "169.254.255.255:5065" discarded - casr and dbcar (UDP search destination) show this interface address (link-local) in addition to the two regular interfaces Test #2 Client address list only MSVC 64 MSVC 32 Cygwin MinGW32 starting second IOC pass pass pass pass client get pass pass pass pass epicsParamShow pass pass pass pass casr 1 pass pass pass pass dbcar "" 8 pass pass pass pass Note on Cygwin: - warning at boot time Warning: Duplicate EPICS CA Address list entry "169.254.255.255:5065" discarded - casr shows this interface address in addition to the two regular interfaces Test #3 Client and Server on a single interface MSVC 64 MSVC 32 Cygwin MinGW32 starting second IOC pass pass FAIL pass client get pass pass FAIL pass epicsParamShow pass pass FAIL pass casr 1 pass pass FAIL pass dbcar "" 8 pass pass FAIL pass Failure on Cygwin: - error at boot time [cas warnings in case of second IOC] CAS: UDP Socket bcast bind error: "Cannot assign requested address" IOC hangs after that message Test #4 Client and Server on multiple interfaces MSVC 64 MSVC 32 Cygwin MinGW32 starting second IOC skip skip FAIL skip client get skip skip FAIL skip epicsParamShow skip skip FAIL skip casr 1 skip skip FAIL skip dbcar "" 8 skip skip FAIL skip Failure on Cygwin: - error at boot time [cas warnings in case of second IOC] CAS: UDP Socket bcast bind error: "Cannot assign requested address" IOC hangs after that message Test #5 Client and Server on different single interfaces MSVC 64 MSVC 32 Cygwin MinGW32 starting second IOC skip skip FAIL skip client get skip skip FAIL skip epicsParamShow skip skip FAIL skip casr 1 skip skip FAIL skip dbcar "" 8 skip skip FAIL skip Failure on Cygwin: - error at boot time [cas warnings in case of second IOC] CAS: UDP Socket bcast bind error: "Cannot assign requested address" IOC hangs after that message Test #6 IPv4 Multicast for search and beacons MSVC 64 MSVC 32 Cygwin MinGW32 starting second IOC pass pass pass pass client get pass pass pass pass epicsParamShow pass pass pass pass casr 1 pass pass pass pass dbcar "" 8 pass pass pass pass Note on Cygwin: - warning at boot time Warning: Duplicate EPICS CA Address list entry "169.254.255.255:5065" discarded - casr shows this interface address in addition to the two regular interfaces