[Bug 1248] New: Network setup jumps to random address when no interfaces available

[rtems-bugs at rtems.org]

http://www.rtems.org/bugzilla/show_bug.cgi?id=1248

           Summary: Network setup jumps to random address when no interfaces
                    available
           Product: RTEMS
           Version: 4.7
          Platform: All
        OS/Version: RTEMS
            Status: NEW
          Severity: normal
          Priority: P4
         Component: networking
        AssignedTo: norume at aps.anl.gov
        ReportedBy: luke at spacequest.com


When there are no available interfaces (i.e., no attach function completes
successfully), rtems_bsdnet_setup will cause a jump to a random address.  This
is due to the fact that the address structure is not initialized until after
the interface is fully configured; however, the default route is configured
regardless of the existence of configured interfaces.  Thus, the sa_family
field of address is un-initialized; rtrequest then uses an invalid routing
tree, and the code jumps off to hyperspace.

The fix seems easy enough: don't add the default route unless at least one
interface has been configured successfully.


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