Netboot DNS issues

Nick_Gooch
Contributor III

I'm sure this is something simple that I'm missing but I finally got a our Netboot server working. I can boot into the os and everything looks like it works except it's using the local host for DNS. I try changing it through Network Preferences to use our DNS servers but it doesn't seem to work.

If I do an nslookup server it reports Default server 127.0.0.1
If I change the server to one of our DNS servers under nslookup I can get it to resolve. Any idea what I'm missing?

4 REPLIES 4

alanmcseveney
New Contributor

Can you please run these commands on the machine while it is netbooted and post the output:

netstat -nr | head -6

cat /etc/resolv.conf

ifconfig

Nick_Gooch
Contributor III

NetBoot:~ root# netstat -nr | head -6
Routing tables

Internet:
Destination Gateway Flags Refs Use Netif Expire
default 172.31.18.254 UGSc 1 0 en0
127 127.0.0.1 UCS 0 0 lo0
NetBoot:~ root# cat /etc/resolv.conf
cat: /etc/resolv.conf: No such file or directory
NetBoot:~ root# ifconfig
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 options=3<RXCSUM,TXCSUM> inet6 ::1 prefixlen 128 inet 127.0.0.1 netmask 0xff000000 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 nd6 options=1<PERFORMNUD>
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 ether 04:0x:cx:dx:fx:52 inet 172.31.18.186 netmask 0xffffff00 broadcast 172.31.18.255 inet6 fe80::60c:ceff:fed0:f152%en0 prefixlen 64 scopeid 0x4 nd6 options=1<PERFORMNUD> media: autoselect status: active
p2p0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 2304 ether 06:xx: media: autoselect status: inactive

alanmcseveney
New Contributor

It seems really odd that you would have no /etc/resolv.conf

can you post the result of:

networksetup -getinfo Ethernet

Nick_Gooch
Contributor III

I just added my server info to the hosts file for now. I will revisit again when I have more time. Thanks for your help so far.