[nwam-dev] fix concurrancy bugs in dhcp start code

[michael.hun...@sun.com]

Author: Michael Hunter <Michael.Hunter at Sun.COM>
Repository: /hg/nwam/nwam1
Latest revision: b8043adfd29f32a0bf7d13c27fe5f4e2edcd4e8d
Total changesets: 1
Log message:
fix concurrancy bugs in dhcp start code
fix bogus log message in plumb_unplumb

Files:
        update: usr/src/cmd/cmd-inet/lib/nwamd/ncu_events.c
        update: usr/src/cmd/cmd-inet/lib/nwamd/ncu_ip.c
        update: usr/src/cmd/cmd-inet/lib/nwamd/util.h