Fix dns set

install/variables/net.py

@@ -704,11 +704,11 @@ class VariableOsInstallNetDns(VariableOsInstallNetDnsSearch):
                  map(lambda x:x.strip().partition("nameserver")[2].strip(),
                  filter(lambda x:x.lstrip().startswith("nameserver"),
                  readLinesFile('/etc/resolv.conf'))))
-        return "" if self.isDNSByDHCP() else ",".join(dnsIps)
+        return "" if self.isDNSByDHCP() else " ".join(dnsIps)
 
     def check(self,value):
         reIp = re.compile(ip.IP_ADDR)
-        if any(ifilterfalse(reIp.match,value.split(','))):
+        if any(ifilterfalse(reIp.match,value.split(' '))):
             raise VariableError(_("Wrong IP address for DNS"))
 
     def humanReadable(self):