The solution would be to search non-sequentially.
If the first nameserver fails to answer, then it should ask other till it gets
correct nameserver.
For example if the request needs to resolve private address-it first searches
non sequentially and asks 8.8.8.8 nameserver initially but it can resolve only
public addresses. So now it asks other nameserver 192.168.0.1, it can resolve
both public and private addresses.
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https://bugs.launchpad.net/bugs/1003842
Title:
dnsmasq sometimes fails to resolve private names in networks with non-
equivalent nameservers
Status in dnsmasq package in Ubuntu:
Triaged
Status in network-manager package in Ubuntu:
Invalid
Status in dnsmasq source package in Precise:
Triaged
Status in network-manager source package in Precise:
Invalid
Status in dnsmasq package in Debian:
New
Bug description:
A number of reports already filed against network-manager seem to
reflect this problem, but to make things very clear I am opening a new
report. Where appropriate I will mark other reports as duplicates of
this one.
Consider a pre-Precise system with the following /etc/resolv.conf:
nameserver 192.168.0.1
nameserver 8.8.8.8
The first address is the address of a nameserver on the LAN that can
resolve both private and public domain names. The second address is
the address of a nameserver on the Internet that can resolve only
public names.
This setup works fine because the GNU resolver always tries the first-
listed address first.
Now the administrator upgrades to Precise and instead of writing the
above to resolv.conf, NetworkManager writes
server=192.168.0.1
server=8.8.8.8
to /var/run/nm-dns-dnsmasq.conf and "nameserver 127.0.0.1" to
resolv.conf. Resolution of private domain names is now broken because
dnsmasq treats the two upstream nameservers as equals and uses the
faster one, which could be 8.8.8.8.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1003842/+subscriptions
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