I'm re-submitting this fast-track for myself. The case was previously submitted as "closed" and was approved, but it was later determined that it could be made "open". I'm thus re-starting the timer on this case as an open case, and there is no substantive change to the spec since it was previously submitted as a closed case. The timer expires on 06/07/2007.
EOF of Mobile IP ================ This case proposes to announce the obsolescence of Mobile IPv4 in the next patch or micro release, and remove Mobile IPv4 functionality from the next minor or major release. Details ======= Mobile IPv4 was introduced into Solaris 9 (and later back-ported to Solaris 8) for at the request of one customer. The One Pager for PSARC 1999/111 states that this customer was the primary consumer, and that at the time, the customer had agreed in principle to incorporate Mobile IP functionality into their product, which was to be built using a Solaris platform. This never happened. The customer evaluated the Mobile IP implementation that was integrated in Solaris, but never rolled out any products which used it. Since then, no customers have been known to use the implementation, and the code has remained untested and unused (there is an STC mobile IP test suite, but PIT has never run it). Many projects have integrated into Solaris without testing Mobile IP, and have inadvertently broken some key Mobile IP features such as reverse tunneling (something which customers would have discovered and escalated had they been using it). In addition to the inoperative status of reverse tunneling in Solaris 10 and Nevada, mipagent also contains some architectural bugs that cannot realistically be fixed due to lack of testing infrastructure and resources. Namely, as described in 4152864, it configures multiple IP tunnels between the same pair of IP addresses, creating a demultiplexing ambiguity that is impossible to untangle. The upcoming Clearview project will disallow the creation of more than one tunnel between the same pair of IP addresses, in theory causing failures in mipagent operation (if it could be made to work at all). The mipagent daemon also uses the obsolete SEA SNMP library, which has been EOF'ed already as part of LSARC/2006/150. There are no plans to enhance mipagent to use a more modern interface such as SMA. Since there is no plan to fix or enhance mipagent, it will either become more broken, or we can simply remove it. This case proposes to remove it and all related interfaces which are of no value other than to interact with mipagent. Removing Mobile IP from Solaris is not as simple as undoing everything that Mobile IP projects previously did. Some of the interfaces implemented by Mobile IP projects and previously approved by PSARC will remain due to their general applicability to other technologies. The breakdown of which interfaces are affected by this EOF and which are not is contained in the interface tables in the "Affected Interfaces" section below. The proposal is to modify the documentation of affected interfaces to reflect their obsolescence in the next solaris patch or micro release, then remove the interfaces from the next minor or major release. Related PSARC Cases: ==================== 1999/111 Mobile IP project 1999/439 Mobile IP RFE's 1999/445 Mobile IP Fixups 2000/013 MobileIP IPv4 socket options 2000/072 ARP ioctls for Mobile IP (removed by 2003/088) 2000/094 Bitmask flags for reverse tunneling 2000/117 IP option for reverse tunneling in MobileIP 2000/145 Reverse Tunnel for mipagent 2000/162 Updates to Mobile-IP AAA Interface Specication 2000/202 IP_RECVIF socket option for raw socket 2000/239 IP_UNICAST_IF socket option for Mobile IP (removed by 2001/350) 2000/299 Mobile-IP AAA Interface Specification 2000/409 AAA Protocol Update 2001/138 Mobile IP Dynamic Interface Detection 2001/350 MobileIP Socket Extension 2001/355 Netstat Update for Mobile IP 2001/505 IPsec For Mobile IP Related CRs =========== 6479886 mipagent and related kernel interfaces should be removed 6511070 mobile IP code in onnv is in dubious state. Affected Interfaces =================== _________________________________________________________________________ | Interfaces Removed by This Case | |_______________________________|_______________________|_______________| |Interface | Classification | Comments | |_______________________________|_______________________|_______________| | mipagent(1M) | Committed | 1999/111 | | mipagentstat(1M) | Committed | 1999/111 | | mipagentconfig(1M) | Committed | 1999/111 | | mipagent.conf | Project Private | 1999/111 | | IFF_MIPRUNNING | Committed | 1999/439 | | /etc/snmp/conf/mipagent.reg | Project Private | 1999/445 | | /etc/snmp/conf/mipagent.acl | Project Private | 1999/445 | | /var/run/.mipagentstat_door | Project Private | 1999/445 | | RTA_SRCIFP | Committed | 2000/094 | | netstat -f inif filter | Committed | 2001/355 | | netstat -f src filter | Committed | 2001/355 | |_______________________________|_______________________|_______________| The following are interfaces introduced by Mobile IP related work and _not_ being removed by this case. They are either in use by unrelated subsystems, or generally useful to administrators. _________________________________________________________________________ | Interfaces Not Removed by This Case | |_______________________________|_______________________|_______________| |Interface | Classification | Comments | |_______________________________|_______________________|_______________| | /usr/lib/libmd5.so.1 | Committed | 1999/111 | | MD5Init(), | | | | MD5Update(), | | | | MD5Final(), | | 1999/111 | | md5_calc() | | | | SIOCSLIFNAME | Committed | 1999/439 | | IFF_NORTEXCH | Committed | 1999/439 | | RTF_PRIVATE | Committed | 1999/439 | | route(1M) -private | Committed | 1999/439 | | IP_RECVIF | Committed | 2000/013 | | IP_RECVSLLA | Committed | 2000/013 | | RTA_SRC | Project Private | 2000/094 | | IP_RECVTTL | Committed | 2000/117 | | IP_XMIT_IF | Consolidation Private | 2001/350 | | netstat -f outif filter | Committed | 2001/355 | | netstat -f dst filter | Committed | 2001/355 | | netstat -f af filter | Committed | 2001/355 | | netstat -f flags filter | Committed | 2001/355 | |_______________________________|_______________________|_______________|
