[BusyBox] nslookup always use default server

[magicfox]

Busybox: 1.0
uClibc:  0.9.26

/* nslookup not use full qualified name server */
/* may be to put on TODO list (gnu nslookup handle this) */
/ # nslookup codepoet.org ns.codepoet.org
Server:     localhost
Address:    127.0.0.1

Name:       codepoet.org
Address:    166.70.99.138

/* but nslookup use address */
/ # nslookup codepoet.org 166.70.99.138
Server:     codepoet.org
Address:    166.70.99.138

Name:       codepoet.org
Address:    166.70.99.138


It seems correct but in fact strace still show the usage of the default 
name server defined in /etc/resolv.conf

/*
...
open("/etc/hosts", O_RDONLY)            = 3
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbffff4c0) = -1 ENOTTY 
(Inappropriate ioctl for device)
read(3, "127.0.0.1\tlocalhost\n", 256)  = 20
read(3, "", 256)                        = 0
close(3)                                = 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 3
connect(3, {sa_family=AF_INET, sin_port=htons(53), 
sin_addr=inet_addr("127.0.0.1")}, 16) = 0
send(3, "\0\2\1\0\0\1\0\0\0\0\0\0\003138\00299\00270\003166\7in"..., 44, 
0) = 44select(4, [3], NULL, NULL, {10, 0})     = 1 (in [3], left {9, 
840000})
recv(3, "\0\2\201\200\0\1\0\1\0\3\0\3\003138\00299\00270\003166"..., 
512, 0) = 183
close(3)                                = 0
write(1, "Server:     codepoet.org\n", 25Server:     codepoet.org
) = 25
write(1, "Address:    166.70.99.138\n", 26Address:    166.70.99.138
) = 26
write(1, "\n", 1
)                       = 1
open("/etc/hosts", O_RDONLY)            = 3
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbffff4f8) = -1 ENOTTY 
(Inappropriate ioctl for device)
read(3, "127.0.0.1\tlocalhost\n", 256)  = 20
read(3, "", 256)                        = 0
close(3)                                = 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 3
connect(3, {sa_family=AF_INET, sin_port=htons(53),

sin_addr=inet_addr("127.0.0.1")}, 16) = 0

send(3, "\0\3\1\0\0\1\0\0\0\0\0\0\10codepoet\3org\0\0\1\0\1", 30, 0) = 30
select(4, [3], NULL, NULL, {10, 0})     = 1 (in [3], left {10, 0})
recv(3, "\0\3\201\200\0\1\0\1\0\2\0\2\10codepoet\3org\0\0\1\0\1"..., 
512, 0) = 114
close(3)                                = 0
write(1, "Name:       codepoet.org\n", 25Name:       codepoet.org
) = 25
write(1, "Address:    166.70.99.138\n", 26Address:    166.70.99.138
) = 26
_exit(0)                                = ?
*/

I looked at the achives and I saw an old unanswered mail from Tobias 
reporting that it was a uClibc issue.
http://busybox.net/lists/uclibc/2003-August/006741.html.

It seems true, the same applet compiled against glibc report the correct 
usage of the defined name server.

The definition of nameserver in _res.nsaddr_list[0] seems ignored.