[Bug 675] nslookup does not properly use second argument [SERVER]

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=675

--- Comment #3 from Dmitry K <dmitry at radiofid.ru> 2013-05-17 13:57:26 UTC ---
# echo "" > /etc/resolv.conf 
# nslookup google.com
nslookup: can't resolve '(null)'

nslookup: can't resolve 'google.com'
# nslookup google.com 8.8.8.8
Server:    8.8.8.8
Address 1: 8.8.8.8

nslookup: can't resolve 'google.com'
# echo "nameserver 8.8.8.8" > /etc/resolv.conf 
# nslookup google.com
nslookup: can't resolve '(null)'

Name:      google.com
Address 1: 2a00:1450:4010:c04::66 lb-in-x66.1e100.net
Address 2: 173.194.71.139 lb-in-f139.1e100.net
Address 3: 173.194.71.102 lb-in-f102.1e100.net
Address 4: 173.194.71.100 lb-in-f100.1e100.net
Address 5: 173.194.71.101 lb-in-f101.1e100.net
Address 6: 173.194.71.138 lb-in-f138.1e100.net
Address 7: 173.194.71.113 lb-in-f113.1e100.net
# nslookup google.com 8.8.8.8
Server:    8.8.8.8
Address 1: 8.8.8.8 google-public-dns-a.google.com

Name:      google.com
Address 1: 2a00:1450:4010:c04::66 lb-in-x66.1e100.net
Address 2: 74.125.143.113 la-in-f113.1e100.net
Address 3: 74.125.143.138 la-in-f138.1e100.net
Address 4: 74.125.143.101 la-in-f101.1e100.net
Address 5: 74.125.143.102 la-in-f102.1e100.net
Address 6: 74.125.143.100 la-in-f100.1e100.net
Address 7: 74.125.143.139 la-in-f139.1e100.net


So far nslookup always prints server info for 2nd argument, not for server
being used, and always performs resolv using nameserver from resolv.conf even
if 2nd argument is provided.
BusyBox v1.20.2

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