Re: [Qemu-devel] dns server not working in QEMU using usermode networking (SLIRP)

[FONNEMANN Mark]

>The attached patch should be dumping the same kind of information.

Nslookup does not produce any output in curses or in logfile (-D logfile.txt). 
I tried it using the version installed on the root system (Busybox 1.0):

address@hidden:~# nslookup
                    BusyBox v1.00 (2010.04.14-20:01+0000) multi-call binary

                    Usage: nslookup [HOST] [SERVER]
address@hidden:~# nslookup www.google.com
                    *** Unknown host

                    nslookup: www.google.com: Unknown host

 as well as the newer version installed in initrd image which is version 1.25.1:

address@hidden:~# /initrd/bin/nslookup
                    BusyBox v1.25.1 (2017-05-01 19:00:24 EDT) multi-call binary.

                    Usage: nslookup [HOST] [SERVER]

                    Query the nameserver for the IP address of the given HOST
                    optionally using a specified DNS server
address@hidden:~# /initrd/bin/nslookup www.google.com
                    Server:    10.0.2.3
                    Address 1: 10.0.2.3

                    nslookup: can't resolve 'www.google.com'

I know the patch was applied because when I ping 10.0.2.2 I get the following:

address@hidden:~# ping 10.0.2.2
                    PING 10.0.2.2 (10.0.2.2): 56 data bytes
                    64 bytes from 10.0.2.2: icmp_seq=0 ttl=255 time=0.5 ms
                    64 bytes from 10.0.2.2: icmp_seq=1 ttl=255 time=0.1 ms
                    64 bytes from 10.0.2.2: icmp_seq=2 ttl=255 time=0.1 ms
                    64 bytes from 10.0.2.2: icmp_seq=3 ttl=255 time=0.1 ms
                    64 bytes from 10.0.2.2: icmp_seq=4 ttl=255 time=0.2 ms

                    --- 10.0.2.2 ping statistics ---
                    5 packets transmitted, 5 packets received, 0% packet loss
                    round-trip min/avg/max = 0.1/0.2/0.5 ms

address@hidden qemu]$ cat logfile
ip input a00020f -> a000202 1
ip input a00020f -> a000202 1
ip input a00020f -> a000202 1
ip input a00020f -> a000202 1
ip input a00020f -> a000202 1

mark.