Misconfigured slave?

[Claes Gyllenswärd]

Hello bind-users

I have recently set up my first two BIND-instances, and I believe that
I have gotten things nearly right, but something is amiss.
"Internetstiftelsen", handles the TLD .se, and they have a self-test
one can run on ones DNS's before actually using them. Running this
test, it returns a number of errors:

1) You only have 1 DNS
2) Glue for DNS-server ns1.letharion.se differs between child and
parent zone. This is a configuration problem that should be corrected.
3) I can find no adress for SLAVE_IP.letharion.se. Incorrect hostname
or adress for SLAVE_IP.letharion.se.

Below are what I believe to be the relevant configuration files. I
have used sed to replace the ip-adresses of both servers,
which verified that all ip have been typed in correctly. I also
removed any logging for brevity.

I will appreciate any input on what I have done wrong.

Master config:
options {
        directory "/var/bind";
        listen-on-v6 { none; };
        listen-on port 53 { 127.0.0.1; MY_IP; };
        pid-file "/var/run/named/named.pid";
};
view "external" {
        match-clients { any; };
        recursion no;
        zone "." IN {
                type hint;
                file "named.ca";
        };
        zone "127.in-addr.arpa" IN {
                type master;
                file "pri/127.zone";
                allow-update { none; };
                notify no;
        };
        zone "letharion.se" {
                type master;
                file "pri/letharion.se.external";
                allow-query { any; };
                allow-transfer { SLAVE_IP; };
        };
};
Zonefile:
$TTL 2d
@  IN SOA   ns1.letharion.se. ADMIN.letharion.se. (
   10042601 ;serial
   3h ;refresh
   1h ;retry
   1w ;expiry
   1d )  ;minimum

letharion.se.        IN MX 0 mail.letharion.se.
letharion.se.        IN TXT   "v=spf1 ip4:MY_IP/32 mx ptr
mx:mail.letharion.se ~all"
letharion.se.        IN NS ns1.letharion.se.
letharion.se.        IN NS SLAVE_IP
www.letharion.se.    IN A  MY_IP
ns1.letharion.se.    IN A  MY_IP
mail.letharion.se.   IN A  MY_IP

Slave config:
options {
        directory "/var/bind";
        listen-on-v6 { none; };
        listen-on port 53 { 127.0.0.1; SLAVE_IP; };
        pid-file "/var/run/named/named.pid";
};

view "external" {
        match-clients { any; };
        recursion no;
        zone "." IN {
                type hint;
                file "named.ca";
        };
        zone "127.in-addr.arpa" IN {
                type master;
                file "pri/127.zone";
                allow-update { none; };
                notify no;
        };
        zone "letharion.se" {
                type slave;
                file "pri/letharion.se.external.bak";
                allow-query { any; };
                masters { MY_IP; };
        };
};