z/VM TCP/IP APARs (by Release Level)

  • The following tables list TCP/IP APARs by release level, along with pertinent PTF numbers and RSU inclusive status — an applicable RSU level, No, or N/A (Not Applicable). TLS/SSL applicability also is indicated.

    Because RSU content for a given release level is cumulative, an APAR fix listed for a lower level will be included on any subsequent higher-level RSU.

  • APAR numbers for important or significant APARs are highlighted with red text.
  • Pre-requisite, Co-requisite and Supersede PTFs are not listed in the tables that follow
  • z/VM Virtual Networking CP Maintenance (z/VM 6.4.0)
  • Last Update: 02/08/2022
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Level 710 APARs

APAR Date Closed PTF Number On RSU TLS/SSL Abstract
PH22045 02/11/2020 UI67817 No No ZVM TCPIP - IP stack failure with VLAN on a single OSA
PH21653 02/07/2020 UI67800 No No NETSTAT OSAINFO fails with AMPX014I or AMPX011I
PH18016 11/11/2019 UI66363 No No Security APAR
PH15285 10/01/2019 UI65609 No No Upgrade MPROUTE to z/OS 2.4 level
PH12157 07/30/2019 UI64500 No Yes Disable cipher ECDHE_RSA_NULL_SHA by default
PH10885 07/18/2019 UI64289 No No Expand SMTP Transient Error Processing for RCPT TO
PH13366 06/21/2019 UI63805 No No Recursive Abends During TCP/IP Shutdown with SSL
PH04703 05/13/2019 UI62768 1902 No Vswitch Priority Queuing - TCP/IP Support
PI99085 03/04/2019 UI61656 1902 No TCP/IP Support for OSA-Express7S 25G Adapter
PH06391 03/13/2019 UI61874 No No Invalid DTCPARMS tag causes tcprun failure
PH07752 02/11/2019 UI61235 1902 No AMPX036I key mismatch in TCP connection tree node
PI99184 12/06/2018 UI60128 1901 Yes Z/VM TLS/SSL server elliptic curve (ECC) support
PI99134 11/05/2018 UI59503 1901 Yes Enablement of FIPS 140-2 cryptographic validation
PH01905 10/01/2018 UI58838 1901 No z/VM FTP Server Should Support FEAT Command
PH01192 09/06/2018 UI58352 1901 Yes SSL Socket May Prematurely Close at End of Session
PH01014 08/28/2018 UI60128 1901 Yes PROG 5 Abend in SSL Server - Addressing Exception
PH00032 07/19/2018 UI57373 1801 Yes Addressing Exception Loop During Handshake Failure

Level 640 APARs

APAR Date Closed PTF Number On RSU TLS/SSL Abstract
PH22045 02/11/2020 UI67817 No No ZVM TCPIP - IP stack failure with VLAN on a single OSA
PH21653 02/07/2020 UI67799 No No NETSTAT OSAINFO fails with AMPX014I or AMPX011I
PH18016 11/11/2019 UI66362 No No Security APAR
PH15285 10/01/2019 UI65608 No No Upgrade MPROUTE to z/OS 2.4 level
PH10885 07/18/2019 UI64288 No No Expand SMTP Transient Error Procesing For RCPT TO
PI99085 03/04/2019 UI61655 1901 No TCP/IP Support for OSA Express7S 25G Adapter
PH06391 03/13/2019 UI61873 No No Invalid DTCPARMS tag causes tcprun failure
PH07752 02/11/2019 UI61234 No No AMPX036I key mismatch in TCP connection tree node
PI99134 11/05/2018 UI59502 1901 Yes Enablement of FIPS 140-2 cryptographic validation
PH04374 10/29/2018 UI61655 1901 No Return code x'200b' on delete IP multicast request
PH01905 10/01/2018 UI58837 1901 No z/VM FTP Server Should Support FEAT Command
PH01192 09/06/2018 UI58351 1802 Yes SSL Socket May Prematurely Close at End of Session
PH01014 08/28/2018 UI58151 1802 Yes PROG 5 Abend in SSL Server - Addressing Exception
PI97021 06/11/2018 UI56441 1802 No Assertion errors when passive open resource shortage
PI98434 06/06/2018 UI56321 1802 --- Security APAR
PI89743 04/06/2018 UI55072 1802 Yes SSL server PROG005 abend when RSCS SHUTDOWN issued
PI91811 03/21/2018 UI54892 1802 No NETSTAT FILTER only returns 256 addresses
PI93863 02/21/2018 UI53990 No No FTPEXIT SAMPEXEC displays incorrect IP address
PI91869 01/10/2018 UI53110 1801 --- Security APAR
PI88220 12/22/2017 UI52918 1801 No Add CANCEL2 Support for IPv6 Sockets
PI83672 12/11/2017 UI52595 1801 --- Security APAR
PI84512 10/10/2017 UI51538 1801 No IPWIZARD fails with DTCIPW2503E
PI83658 09/26/2017 UI50715 1702 Yes PEPI73495 Secure data transfer fails on client RST
PI80912 08/23/2017 UI49779 1702 No New Function - Firewall Friendly FTP ( Memo To Users)
PI73016 08/14/2017 UI49565 1702 No Support OSA-Express6S cards for command NETSTAT OSAINFO
PI81314 08/09/2017 UI49439 1702 Yes PRG005 abend in SSL server - addressing exception
PI83256 07/21/2017 UI49049 1702 Yes Misleading message DTCSSL506E
PI81678 06/30/2017 UI48493 1702 Yes SSL socket may prematurely close at end of session
PI81696 05/25/2017 UI47600 1702 --- Integrity APAR
PI78530 04/09/2017 UI46316 1701 --- Integrity APAR
PI79288 04/04/2017 UI46169 1701 No Multiple VIPA definitions not working on release 6.4.0
PI72106 03/27/2017 UI45923 1701 Yes CRYPTO EXPRESS APVIRT for z/VM TLS/SSL and z/VM LDAP
PI78464 03/26/2017 N/A N/A No z/VM LDAP documentation update (DOC APAR)
PI77169 03/26/2017 UI45915 1701 --- Integrity APAR
PI74764 03/09/2017 UI45511 1901 No TELNET connections may hang when NOTN3270E is specified
PI75944 02/15/2017 UI44708 No No X PROG752 error using PCOMM with 62x160 screen size
PI73495 02/09/2017 UI44535 1701 No TCPIP connections can get stuck in FIN-WAIT-2
PI75747 02/08/2017 UI44529 1702 Yes SSL server abend when RSCS SHUTDOWN issued
PI68525 01/25/2017 UI44208 1701 Yes Large secure FTP transfer bogs down and hangs SSL sessions
PI73260 01/25/2017 UI44535 1701 --- Security APAR
PI74049 01/23/2017 UI44164 1901 No TELNET SCEXIT input parameters contain invalid IPv4 addr
PI73070 01/12/2017 UI44208 1701 --- Security APAR
PI73049 12/09/2016 UI43248 1701 No AMPX061I error in SMTP followed by PRG004 or PRG005 abend
PI70519 11/30/2016 UI43039 1701 No PEPI13614 IMAP server error reply messages truncated
PI68533 11/15/2016 UI45923 1701 Yes Backfit of Various SSL RAS Functions
PI70089 11/03/2016 UI42274 1701 No PEPI59963 TCPRUN 'STACK' Tag checking inhibits Alternate SSL/Stack use
PI71640 11/02/2016 UI42256 1701 No SIZELIMIT set to maximum value can cause a loop in SDBM
PI70134 10/05/2016 UI44208 1701 Yes PEPI56474 TCPIP ACB Storage May Not Be Released When Using SSL
-- 16/10/04 PTF PECHANGE

Level 630 APARs

APAR Date Closed PTF Number On RSU TLS/SSL Abstract
PI83672 12/11/2017 UI52594 No --- Security APAR
PI83658 09/26/2017 UI50714 No Yes PEPI73495 Secure data transfer fails on client RST
PI73016 08/14/2017 UI49564 No No Support OSA-Express6S cards for command NETSTAT OSAINFO
PI81314 08/09/2017 UI49438 No Yes PRG005 abend in SSL server - addressing exception
PI83256 07/21/2017 UI49048 No Yes Misleading message DTCSSL506E
PI81696 05/25/2017 UI47599 1701 --- Integrity APAR
PI78530 04/09/2017 UI46314 1701 --- Integrity APAR
PI78464 03/26/2017 N/A N/A No z/VM LDAP documentation update (DOC APAR)
PI77169 03/26/2017 UI45914 1701 --- Integrity APAR
PI74764 03/09/2017 UI45510 1701 No TELNET connections may hang when NOTN3270E is specified
PI75944 02/15/2017 UI44707 1701 No X PROG752 error using PCOMM with 62x160 screen size
PI73495 02/09/2017 UI44534 No No TCPIP connections can get stuck in FIN-WAIT-2
PI75747 02/08/2017 UI44528 1701 Yes SSL server abend when RSCS SHUTDOWN issued
PI68525 01/25/2017 UI44207 1701 Yes Large secure FTP transfer bogs down and hangs SSL sessions
PI73260 01/25/2017 UI44534 1701 --- Security APAR
PI74049 01/23/2017 UI44163 1701 No TELNET SCEXIT input parameters contain invalid IPv4 addr
PI73360 01/18/2017 UI44078 1701 No PEPI57534 TCPIP control blocks no longer on word boundaries
PI73070 01/12/2017 UI44207 1701 --- Security APAR
PI73049 12/09/2016 UI43247 1701 No AMPX061I error in SMTP followed by PRG004 or PRG005 abend
PI70519 11/30/2016 UI43038 1701 No PEPI13614 IMAP server error reply messages truncated
PI68533 11/15/2016 UI42769 1701 Yes Backfit of Various SSL RAS Functions
PI70089 11/03/2016 UI42273 1602 Yes PEPI59963 TCPRUN 'STACK' Tag checking inhibits Alternate SSL/Stack use
PI70134 10/05/2016 UI41425 1701 Yes PEPI56474 TCPIP ACB Storage May Not Be Released When Using SSL
-- 16/10/04 PTF PECHANGE
PI66464 08/01/2016 UI39816 1701 Yes ABEND0C1 or ABEND0C4 in GSK_SECURE_SOCKET_INIT
PI56474 06/07/2016 UI37274 No Yes Support for Secure RSCS TCPNJE Links
PI59963 05/31/2016 UI38297 1602 Yes TCPRUN 'STACK' Tag Checking Inhibits Alternate SSL/Stack Use
PI61469 05/24/2016 UI38150 1602 Yes PEPI60636 SSL Server Data Handling Can Corrupt Data
PI60636 04/18/2016 UI37135 1602 Yes PEPI53104 SSL Server Data Handling Can Corrupt Data
PI57534 03/11/2016 UI36140 No No Add eyecatcher support to z/VM TCP/IP control blocks
PI57886 03/03/2016 UI35845 1602 No SYN-ACK response may contain TSopt when it should not
PI56516 02/09/2016 UI35252 1601 --- Integrity APAR
PI56350 02/03/2016 UI35076 1601 --- Integrity APAR
PI55970 01/26/2016 UI35076 1601 --- Integrity APAR
PI53104 01/13/2016 UI34463 1602 Yes Implicit Secure Connections are Closed Unexpectedly
PI52850 12/11/2015 UI33731 1601 No PEPI21053 MSDTCOSD396I rc E004 SETGROUPPARMS
PI51726 12/08/2015 UI28524 1601 Yes PEPI30085 SSL TRACE Operand Parsing Error During Server Startup
-- 15/12/08 PTF PECHANGE
PI50876 10/22/2015 UI32316 1602 No SNMP mishandling >10 trap destinations
PI43610 09/17/2015 UI36140 No No CD /USERID.RDR not working as of FTP release 6.2.0
PI40702 09/10/2015 UI31015 1601 Yes System SSL V2.1 and TLS/SSL Server Upgrade
PI41480 07/29/2015 UI36140 No No SMTP not retrying unresolved mail recipient
PI44132 07/13/2015 UI29390 1601 --- Integrity APAR
PI21053 06/17/2015 UI26763 1502 No z/VM TCP/IP support for Multi-VSWITCH LAG
PI30085 06/16/2015 UI28570 1602 Yes DTCSSL2411E Message Issued Erroneously for Valid SSLADMIN Trace Command
PI38574 06/15/2015 UI28556 1502 --- Security APAR
PI41073 06/14/2015 UI28524 1602 Yes SSL Server Shutdown Due to FD_ISSET Assert and CEE5207E SIGABRT
PI41479 06/14/2015 UI28527 1601 No FTP server shuts down after failed data connection attempt
PI41317 06/05/2015 UI29390 1502 --- Integrity APAR
PI38762 04/24/2015 UI27096 1502 Yes TELNET connections using static SSL fail to connect
PI36920 04/01/2015 UI26460 1502 No VMNFS server gets DTCNFS1416E SIGERROR and shuts down
PI36658 03/20/2015 UI26043 1502 --- Integrity APAR
PI31200 02/23/2015 UI25368 1502 Yes Enable or Disable SSL/TLS Protocols Based Upon Security Policy For Older Releases
(z/VM 5.4 and z/VM 6.2)
PI32624 02/12/2015 UI25109 1502 --- Integrity APAR
PI31202 02/12/2015 UI25144 1502 Yes Enable SSL/TLS Server for PKCS #12 Usage Using V1.13 System SSL
PI32316 01/28/2015 UI24729 1602 No IMAP server accept is cancelled
PI29130 01/22/2015 UI25021 1502 Yes New Function - Add PKCS #12 Certificate/key Store Support for SSL/TLS Environment
PI30359 12/17/2014 UI24026 1501 Yes Assertion Errors in TCPIP Lead to SSL Failures
PI16680 06/10/2014 UI18750 1501 Yes Accept() Returns 0.0.0.0 For SSL Connection
PI06358 11/24/2013 UI12912 1502 Yes Using AT-TLS and ResetCipherTimer set to a Non Zero Value Can Cause Abend 0C4
PM93363 11/13/2013 UI12490 1401 Yes NIST 800-131A MODE Support for z/VM SSL Server
PI04999 10/30/2013 UI11978 1401 Yes PEPM95516 SSL Server Abends on Startup in FIPS Mode
PM95516 10/10/2013 UI11978 1401 Yes Enablement of Pre-Initialization FIPS Mode in System SSL and SSL Server
PM83945 09/18/2013 UK97846 1401 Yes SSL Server Drops Connections Due to Existing SCBX Condition
PM90851 06/25/2013 UK95468 1501 Yes TCPIP Assertion Errors and Loss of SSL Connectivity

Level 620 APARs

APAR Date Closed PTF Number On RSU TLS/SSL Abstract
PI81696 05/25/2017 UI47598 No --- Integrity APAR
PI78530 04/09/2017 UI46313 No --- Integrity APAR
PI78464 03/26/2017 N/A N/A No z/VM LDAP documentation update (DOC APAR)
PI77169 03/26/2017 UI45906 No --- Integrity APAR
PI74764 03/09/2017 UI45509 No No TELNET connections may hang when NOTN3270E is specified
PI75944 02/15/2017 UI44706 No No X PROG752 error using PCOMM with 62x160 screen size
PI73495 02/09/2017 UI44533 No No TCPIP connections can get stuck in FIN-WAIT-2
PI73260 01/25/2017 UI44533 No --- Security APAR
PI73049 12/09/2016 UI43246 No No AMPX061I error in SMTP followed by PRG004 or PRG005 abend
PI70519 11/30/2016 UI43037 No No PEPI13614 IMAP server error reply messages truncated
PI68533 11/15/2016 UI42768 No Yes Backfit of Various SSL RAS Functions
PI70089 11/03/2016 UI42272 No Yes PEPI59963 TCPRUN 'STACK' Tag checking inhibits Alternate SSL/Stack use
PI59963 05/31/2016 UI38296 No Yes TCPRUN 'STACK' Tag Checking Inhibits Alternate SSL/Stack Use
PI61469 05/24/2016 UI38149 No Yes PEPI60636 SSL Server Data Handling Can Corrupt Data
PI60636 04/18/2016 UI37134 No Yes PEPI53104 SSL Server Data Handling Can Corrupt Data
PI57886 03/03/2016 UI35844 No No SYN-ACK response may contain TSopt when it should not
PI56516 02/09/2016 UI35251 No --- Integrity APAR
PI56350 02/03/2016 UI35075 No --- Integrity APAR
PI53104 01/13/2016 UI34462 No --- Implicit Secure Connections are Closed Unexpectedly
PI50876 10/22/2015 UI32315 No No SNMP mishandling >10 trap destinations
PI43610 09/17/2015 UI31289 1501 No CD /USERID.RDR not working as of FTP release 6.2.0
PI41480 07/29/2015 UI29827 1501 No SMTP not retrying unresolved mail recipient
PI44132 07/13/2015 UI29389 1501 --- Integrity APAR
PI38574 06/15/2015 UI28555 1501 --- Security APAR
PI41479 06/14/2015 UI28526 1501 No FTP server shuts down after failed data connection attempt
PI41317 06/05/2015 UI28273 1501 --- Integrity APAR
PI38762 04/24/2015 UI27093 1501 Yes TELNET connections using static SSL fail to connect
PI36920 04/01/2015 UI26459 1501 No VMNFS server gets DTCNFS1416E SIGERROR and shuts down
PI36658 03/20/2015 UI26041 1501 --- Integrity APAR
PI31200 02/23/2015 UI25367 1501 Yes Enable or Disable SSL/TLS Protocols Based Upon Security Policy For Older Releases
(z/VM 5.4 and z/VM 6.2)
PI32316 01/28/2015 UI24728 1501 No IMAP server accept is cancelled
PI30359 12/17/2014 UI24025 1501 Yes Assertion Errors in TCPIP Lead to SSL Failures
PM83945 09/18/2013 UK97845 1302 Yes SSL Server Drops Connections Due to Existing SCBX Condition
PM86100 04/10/2013 UK93324 1302 No PEPM81589 PTF-Supplied MODULES Built Incorrectly
PM77039 03/04/2013 UK92195 1501 Yes TCPIP Assertion Errors and Loss of SSL Connectivity
PM81589 01/29/2013 UK91316 1501 Yes System SSL Storage Leak When Using GSK_RENEGOTIATION_PEER_CERT_CHECK_ON
And No Renegotiated Handshake
PM59015 09/28/2012 UK82212 1301 Yes SSL Server Becomes Unresponsive During Operation
PM71046 09/21/2012 UK82005 1202 No AMPX084I Pascal Runtime Error in TCPIP
PM52716 02/27/2012 UK74834 1202 Yes Enable Client Certificate Authentication in z/VM SSL

Level 540 APARs

APAR Date Closed PTF Number On RSU TLS/SSL Abstract
PI83672 12/11/2017 UI52593 No --- Security APAR
PI83658 09/26/2017 UI50713 No Yes PEPI73495 Secure data transfer fails on client RST
PI81314 08/09/2017 UI49437 No Yes PRG005 abend in SSL server - addressing exception
PI81696 05/25/2017 UI47597 No --- Integrity APAR
PI78530 04/09/2017 UI46312 No --- Integrity APAR
PI78464 03/26/2017 N/A N/A No z/VM LDAP documentation update (DOC APAR)
PI77169 03/26/2017 UI45905 No --- Integrity APAR
PI74764 03/09/2017 UI45539 No No TELNET connections may hang when NOTN3270E is specified
PI75944 02/15/2017 UI44705 No No X PROG752 error using PCOMM with 62x160 screen size
PI73495 02/09/2017 UI44561 No --- TCPIP connections can get stuck in FIN-WAIT-2
PI73260 01/25/2017 UI44561 No --- Security APAR
PI70519 11/30/2016 UI43036 No No PEPI13614 IMAP server error reply messages truncated
PI68533 11/15/2016 UI42771 No Yes Backfit of Various SSL RAS Functions
PI70089 11/03/2016 UI42271 No Yes PEPI59963 TCPRUN 'STACK' Tag checking inhibits Alternate SSL/Stack use
PI40252 09/14/2016 UI42771 No Yes SSLADMIN QUERY SESSIONS output contains corrupt data
PI59963 05/31/2016 UI38295 No Yes TCPRUN 'STACK' Tag Checking Inhibits Alternate SSL/Stack Use
PI61469 05/24/2016 UI38148 No Yes PEPI60636 SSL Server Data Handling Can Corrupt Data
PI60636 04/18/2016 UI37133 No Yes PEPI53104 SSL Server Data Handling Can Corrupt Data
PI57886 03/03/2016 UI35843 No No SYN-ACK response may contain TSopt when it should not
PI56516 02/09/2016 UI35250 No --- Integrity APAR
PI56350 02/03/2016 UI35074 No --- Integrity APAR
PI53104 01/13/2016 UI34487 No Yes Implicit Secure Connections are Closed Unexpectedly
PI50876 10/22/2015 UI32314 No No SNMP mishandling >10 trap destinations
PI41480 07/29/2015 UI29826 No No SMTP not retrying unresolved mail recipient
PI44132 07/13/2015 UI35074 No --- Integrity APAR
PI38574 06/15/2015 UI28557 No --- Security APAR
PI41479 06/14/2015 UI28525 No No FTP server shuts down after failed data connection attempt
PI41317 06/05/2015 UI35074 No --- Integrity APAR
PI38762 04/24/2015 UI27059 No Yes TELNET connections using static SSL fail to connect
PI36920 04/01/2015 UI26458 1501 No VMNFS server gets DTCNFS1416E SIGERROR and shuts down
PI36658 03/20/2015 UI26042 1501 --- Integrity APAR
PI31200 02/23/2015 UI25366 1501 Yes Enable or Disable SSL/TLS Protocols Based Upon Security Policy For Older Releases
(z/VM 5.4 and z/VM 6.2)
PI32316 01/28/2015 UI24727 1501 No IMAP server accept is cancelled
PI30359 12/17/2014 UI24260 1501 Yes Assertion Errors in TCPIP Lead to SSL Failures
PM83945 09/18/2013 UK97851 1301 Yes SSL Server Drops Connections Due to Existing SCBX Condition
PM77039 03/04/2013 UK92193 1501 Yes TCPIP Assertion Errors and Loss of SSL Connectivity
PM59015 09/28/2012 UK82210 1202 Yes SSL Server Becomes Unresponsive During Operation
PM71046 09/21/2012 UK82003 1202 No AMPX084I Pascal Runtime Error in TCPIP
PM40046 06/20/2011 UK68939 1102 Yes PEPK97438 SSL Sessions Not Closed Due to Unexpected Data
PM23344 02/22/2011 UK65126 1102 No Telnet SECURECONNECTION PCOMM/OBEYFILE Corrections
PM28594 02/10/2011 UK65181 1102 Yes PEPK97438 - SSLADMIN Command Error DTCSSL2421E For RACF Environment
PK75662 08/13/2010 UK59535 1102 Yes SSL Performance and Scalability Enhancements - TCPIP Module Updates
PK97438 08/06/2010 UK59535 1102 Yes SSL Performance and Scalability Enhancements - SSLSERV Module Updates
PK97437 08/06/2010 UK59535 1102 Yes SSL Performance and Scalability Enhancements - Packaging Updates
PM06244 02/03/2010 UK54302 1002 Yes Operation Exception in crypto_aes_assist
PK87640 10/29/2009 UK51579 1001 Yes SSL Server Error: DMSFRO159E Insufficient Storage Available
PK80387 05/05/2009 UK46335 1001 Yes Broken Pipe Condition Causes SSL Server Shutdown
PK51954 04/24/2009 UK46024 0902 Yes Multiple Connections Cause the SSL Server to Abend
PK84255 04/16/2009 UK45880 0902 Yes Window Scaling Errors Degrade Secure Connection Throughput
PK84182 04/13/2009 UK45770 0902 Yes Unexpected Prompt When Establishing a Secure Connection
PK81448 03/30/2009 UK45373 0902 Yes AMPX036I Assertion Closing Implicit SSL Telnet Connection
PK75268 11/14/2008 UK41626 0901 Yes AMPX036I Assertion Closing a Secure x3270 Session
PK65850 12/04/2008 UK40952 0901 Yes SSL Server Enablement
PK73085 12/02/2008 UK40952 0901 Yes TCP/IP Server Updates for SSL Server Support

Multi-Level Informational/Documentation APARs

APAR Abstract
PI78464 z/VM LDAP documentation update (DOC APAR)
II14790 Info APAR for z/VM SSL Server Documentation Updates
II14420 Info APAR for Undocumented TCP/IP Messages
II14444 Info APAR regarding deprecation of z/VM DNS support