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MA41044 - LIC-COMM-TCPIP IPV6_V6ONLY SOCKET OPTION FAILURE

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 APAR (Authorized Program Analysis Report)

Abstract

LIC-COMM-TCPIP IPV6_V6ONLY SOCKET OPTION FAILURE

Error Description

setsockopt() level IPPROTO_IPV6 option IPV6_V6ONLY incorrectly  
sets the address type in the address manager when the value is 0
and the four bytes after the real unit32 field contain a        
non-zero value.                                                
setsockopt(IPPROTO_IPV6, IPV6_V6ONLY) called with 0 for the    
option_value may result in EPROTOTYPE (3443) errno values on    
subsequent bind() or connect() calls using IPv4-mapped IPv6    
addresses.                                                      

Problem Summary

Please see the ERROR DESCRIPTION section.                      

Problem Conclusion

setsockopt(IPPROTO_IPV6, IPV6_V6ONLY) was fixed to correctly    
process 0 for the option_value in all cases.                    

Temporary Fix

Comments

Circumvention


Do not set IPV6_V6ONLY with option_value of 0.  0 is the default

value so the explicit call is not required.                    

PTFs Available

R540 MF53382 PTF Cover Letter   2094
R545 MF53389 PTF Cover Letter   2094
R610 MF53393 PTF Cover Letter   1256
R611 MF53394 PTF Cover Letter   1256
R710 MF53395 PTF Cover Letter   1270

Affected Modules

         
         

Affected Publications

Summary Information

Status............................................ CLOSED PER
HIPER........................................... No
Component.................................. 9400DG300
Failing Module.......................... RCHMGR
Reported Release................... R540
Duplicate Of..............................




System i Support

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Document Information

Modified date:
18 April 2012