Bug#792430: openresolv: Fail if a zone is declared on multiple interfaces.

[Roy Marples]

Hi

> When a zone is declared on multiple interfaces (not necessarely same
> content, but the same name), the configuration generated doesn't work,
> two entries are provided and this log indicates the failure at bind restart:
> config: error: /var/lib/bind/resolvconf-zones.conf:23: zone
> 'example.org': already exists previous definition:
> /var/lib/bind/resolvconf-zones.conf:16
> 
> I think it's the same problem for other resolvers.
> 
> Maybe use the first declaration, in interfaces order and drop others ?
> It's not perfect, but technically, the problem have no solution (if
> zones are the same, it works perfectly, else, some zone are not reachable).
> 
> This problem also affects the version /3.5.2-1/.

I cannot replicate this.
Attached is output from a system with two interfaces each of which has
DNS servers from DHCP, IPv6RA and DHCPv6.

As you can see, the final result is generated perfectly.

uberlaptop2$ resolvconf -l
# resolv.conf from wm0.dhcp
# Generated by dhcpcd from wm0.dhcp
domain marples.name
search marples.name
nameserver 10.73.2.1

# resolv.conf from wm0.dhcp6
# Generated by dhcpcd from wm0.dhcp6
search marples.name
nameserver 2a01:348:31:2::1

# resolv.conf from wm0.ra
# Generated by dhcpcd from wm0.ra
search marples.name
nameserver 2a01:348:31:2::1

# resolv.conf from iwn0.dhcp6
# Generated by dhcpcd from iwn0.dhcp6
search marples.name
nameserver 2a01:348:31:2::1

# resolv.conf from iwn0.ra
# Generated by dhcpcd from iwn0.ra
search marples.name
nameserver 2a01:348:31:2::1

uberlaptop2$ resolvconf -v
DOMAIN='marples.name'
SEARCH='marples.name'
NAMESERVERS='10.73.2.1 2a01:348:31:2::1'
LOCALNAMESERVERS='127.0.0.1'
DOMAINS='marples.name:10.73.2.1,2a01:348:31:2::1'

uberlaptop2$ cat /etc/resolvconf.conf
name_servers=127.0.0.1
unbound_conf=/usr/pkg/etc/unbound/resolvconf.conf

named_options=/tmp/named-resolvconf-options.conf
named_zones=/tmp/named-resolvconf-zones.conf

uberlaptop2$ cat /tmp/named*
# Generated by resolvconf
forward first;
forwarders {
        10.73.2.1;
        2a01:348:31:2::1;
};
# Generated by resolvconf
zone "marples.name" {
        type forward;
        forward first;
        forwarders {
                10.73.2.1;
                2a01:348:31:2::1;
        };
};

uberlaptop2$

Can you post similar output from your system please?
Mail me directly if you don't want it to appear on this public tracker.

Roy