On 8/3/22 12:59, Timothe Litt wrote:
Try
echo -e "[main]\ndns=none" > /etc/NetworkManager/conf.d/no-dns.conf
systemctl restart NetworkManager.service
Same content in resolv.conf. BTW this is on Centos7.
Timothe Litt
ACM Distinguished Engineer
--------------------------
This communication may not represent the ACM or my employer's views,
if any, on the matters discussed.
On 03-Aug-22 12:36, Robert Moskowitz wrote:
On 8/3/22 11:35, Timothe Litt wrote:
On 03-Aug-22 10:53, bind-users-requ...@lists.isc.org wrote:
# cat resolv.conf
My server is 23.123.122.146. That IPv6 addr is my ATT router.
You don't want to do that. The ATT router will not know how to
resolve internal names. There is no guarantee that your client
resolver will try nameservers in order. If you want a backup, run a
second instance of named.
As for the intermittent issues with resolving external names, that's
frequently a case of hitting different nameservers. Or a firewall.
Get rid of the ATT router first. Then as suggested, a packet trace
will show what happens (if it still does - it could be that the ATT
router's resolver is at fault).
Thank you for your advice. my ifcfg-eth0 has:
DEVICE="eth0"
BOOTPROTO=none
ONBOOT="yes"
TYPE="Ethernet"
NAME="eth0"
MACADDR=02:67:15:00:00:02
MTU=1500
DNS1=23.123.122.146
GATEWAY="23.123.122.158"
IPADDR="23.123.122.146"
NETMASK="255.255.255.240"
IPV6INIT="yes"
And I am ASSuMEing that it is that IPV6INIT that is providing that
IPv6 addr in resolv.cat. So I added:
DNS2=192.168.224.2
And now:
# cat /etc/resolv.conf
# Generated by NetworkManager
search attlocal.net htt-consult.com
nameserver 23.123.122.146
nameserver 192.168.224.2
nameserver 2600:1700:9120:4330::1
ARGH!
I want the IPv6 addr from my firewall/gateway. But I don't want that
IPv6 nameserver!
So I added the IPv6 address for my server. I had not done this as
ATT has said there is no assurance with the IPv6 addresses may
change. So I added:
DNS3=2600:1700:9120:4330::49
and now:
# cat /etc/resolv.conf
# Generated by NetworkManager
search attlocal.net htt-consult.com
nameserver 23.123.122.146
nameserver 192.168.224.2
nameserver 2600:1700:9120:4330::1
# NOTE: the libc resolver may not support more than 3 nameservers.
# The nameservers listed below may not be recognized.
nameserver 2600:1700:9120:4330::49
Sigh. I have to take that dynamic IPv6 assignment. But I want to
stop it pushing into my resolv.conf.
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