[Qemu-devel] "Could Not Get DNS Address" on OS X

[Qemu-devel] "Could Not Get DNS Address" on OS X

[Niko Matsakis]

I find the precompiled qemu for OS X to mostly work fine, but I get 
'Could Not Get DNS Address' when I try to run it and am not connected 
to the network.  As my entire interest in Qemu is to try to find a way 
to test x86 programs when I can't ssh to an x86 linux server, this is 
kind of a downer.

Does Qemu really require a network connection to run?  Am I missing 
some option?  I tried "--dummy-net", and the option to set the number 
of NIC cards to 0.


Niko

Re: [Qemu-devel] "Could Not Get DNS Address" on OS X

[Juergen Keil]

> I find the precompiled qemu for OS X to mostly work fine, but I get 
> 'Could Not Get DNS Address' when I try to run it and am not connected 
> to the network.  As my entire interest in Qemu is to try to find a way 
> to test x86 programs when I can't ssh to an x86 linux server, this is 
> kind of a downer.
> 
> Does Qemu really require a network connection to run?

No.

> Am I missing some option?

No.

>  I tried "--dummy-net", and the option to set the number of NIC cards to 0.

I'm using the following change:

Index: slirp/slirp.c
===================================================================
RCS file: /cvsroot/qemu/qemu/slirp/slirp.c,v
retrieving revision 1.7
diff -u -B -r1.7 slirp.c
--- slirp/slirp.c       7 Oct 2004 23:27:35 -0000       1.7
+++ slirp/slirp.c       24 Mar 2005 09:56:46 -0000
@@ -149,7 +149,8 @@
 
     if (get_dns_addr(&dns_addr) < 0) {
         fprintf(stderr, "Could not get DNS address\n");
-        exit(1);
+        // exit(1);
+       inet_aton("127.0.0.1", &dns_addr);
     }
 
     inet_aton(CTL_SPECIAL, &special_addr);

Re: [Qemu-devel] "Could Not Get DNS Address" on OS X

[Laurent Amon]

Selon Juergen Keil <jk@tools.de>:
> I'm using the following change:
>
> Index: slirp/slirp.c
[...]

Since he is using a precompiled version, your patch is of little help ;-)
AFAK, using '-user-net -nics 0' does work however.

But if your need is to still have network access to the local host (I serve my
local home dir with "Windows File Sharing" on the host), you need to go through
that kind of patch.

Lga.