nsupdate not working on Solaris 7:

[Pat Masterson]

"nsupdate -d nsupdate.txt"

I tried the nsupdate that comes with the system, and one from BIND 
8.1.2. Neither work, they end quickly with no actions. I ran snoop, and 
no packets were sent out to the name server. I ran truss, and the last 
part shows 2 possible errors, but I don't know what they mean. So if 
anybody can take a quick look for me, thanks. -pat

Here's the end of the truss: (mind the line wraps)
open("/usr/platform/SUNW,SPARCstation-5/lib/libc_psr.so.1", O_RDONLY) 
Err#2 ENOENT
close(3)                                        = 0
munmap(0xEF6D0000, 4096)                        = 0
open("nsupdate.txt", O_RDONLY)                  = 3
fstat64(3, 0xEFFFE140)                          = 0
brk(0x0002EFD8)                                 = 0
brk(0x00032FD8)                                 = 0
ioctl(3, TCGETA, 0xEFFFE0CC)                    Err#25 ENOTTY
read(3, " u p d a t e   a d d   p".., 8192)     = 51
read(3, 0x0002EFE4, 8192)                       = 0
llseek(0, 0, SEEK_CUR)                          = 92244
llseek(3, 0, SEEK_CUR)                          = 51
_exit(0)