After starting named with my named.conf.options setting, I manually
generated virbr0 with brctl and set the IP address (192.168.122.1), and
named started listening to 192.168.122.1 using TCP.
$ cat /etc/bind/named.conf.options
options {
directory "/var/cache/bind";
// If there is a firewall between you and nameservers you want
// to talk to, you may need to fix the firewall to allow multiple
// ports to talk. See http://www.kb.cert.org/vuls/id/800113
// If your ISP provided one or more IP addresses for stable
// nameservers, you probably want to use them as forwarders.
// Uncomment the following block, and insert the addresses replacing
// the all-0's placeholder.
// forwarders {
// 0.0.0.0;
// };
//========================================================================
// If BIND logs error messages about the root key being expired,
// you will need to update your keys. See https://www.isc.org/bind-keys
//========================================================================
dnssec-validation auto;
listen-on port 53 { localhost; 192.168.122.0/24; };
allow-query { localhost; 192.168.122.0/24; };
};
$
Because of this behavior, I think that the operations of dnsmasq and named
conflicted, resulting in an error on the dnsmasq side(the second make_sock()
with SOCK_STREAM).
This named is started because it is necessary, but I understand that the
VM host should not run many processes, so the name resolution function
is not run on the VM host, but on another I'm planning to move to a
server.
I understood where the problem is. Thank you very much for your cooperation.
I initially reported it as a bug in dnsmasq, but it turned out to be a problem
in my environment.
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https://bugs.launchpad.net/bugs/2055776
Title:
After updating ubuntu, the network to which the subnet address is
assigned does not become active in KVM.
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