9.6.1-P1 zone parser false errors

[Mark Andrews]

In message <200910301615.AA559480882 at mail.Go2France.com>, "Len Conrad" writes:
> uname -a
> 
> Linux ns1.abcxyz.net 2.4.20-31.9smp #1 SMP Tue Apr 13 17:40:10 EDT 2004 i686 
> i686 i386 GNU/Linux
> 
> old BIND:
> 
> /usr/sbin/named-checkzone -v  
> 
> 9.2.1
> 
> /usr/sbin/named-checkzone abcxyz.com /var/named/db.abcxyz.com
> 
> zone abcxyz.com/IN: loaded serial 2009102902
> 
> OK
> 
> ==========
> 
> current BIND:
> 
> /usr/local/sbin/named-checkzone -v
> 
> 9.6.1-P1
> 
> /usr/local/sbin/named-checkzone abcxyz.com /var/named/db.abcxyz.com
> 
> zone abcxyz.com/IN: abcxyz.com/MX 'aspmx.l.google.com' (out of zone) is a CNA
> ME 'mail-yx0-f102.google.com' (illegal)

getaddrinfo() is reporting that aspmx.l.google.com's cannonical
name is mail-yx0-f102.google.com.  Somewhere in the resolution path
aspmx.l.google.com is being treated as a alias for
mail-yx0-f102.google.com.  In the DNS this is done using a CNAME.

        dns_name_format(name, namebuf, sizeof(namebuf) - 1);
        /*
         * Turn off search.
         */
        if (dns_name_countlabels(name) > 1U)
                strcat(namebuf, ".");
        dns_name_format(owner, ownerbuf, sizeof(ownerbuf));

        result = getaddrinfo(namebuf, NULL, &hints, &ai);
        dns_name_format(name, namebuf, sizeof(namebuf) - 1);
	...
                if (cur != NULL && cur->ai_canonname != NULL &&
                    strcasecmp(cur->ai_canonname, namebuf) != 0) {
			...
                                if (!logged(namebuf, ERR_IS_MXCNAME)) {
                                        dns_zone_log(zone, level,
                                                     "%s/MX '%s' (out of zone)"
                                                     " is a CNAME '%s' "
                                                     "(illegal)",
                                                     ownerbuf, namebuf,
                                                     cur->ai_canonname);
                                        add(namebuf, ERR_IS_MXCNAME);
                                }

> zone abcxyz.com/IN: abcxyz.com/MX 'alt1.aspmx.l.google.com' (out of zone) is 
> a CNAME 'mail-bw0-f39.google.com' (illegal)
> zone abcxyz.com/IN: abcxyz.com/MX 'alt2.aspmx.l.google.com' (out of zone) is 
> a CNAME 'fk-in-f114.1e100.net' (illegal)
> zone abcxyz.com/IN: abcxyz.com/MX 'aspmx2.googlemail.com' (out of zone) is a 
> CNAME 'mu-in-f27.1e100.net' (illegal)
> zone abcxyz.com/IN: abcxyz.com/MX 'aspmx3.googlemail.com' (out of zone) is a 
> CNAME 'mail-pz0-f6.google.com' (illegal)
> zone abcxyz.com/IN: abcxyz.com/MX 'aspmx4.googlemail.com' (out of zone) is a 
> CNAME 'mail-ew0-f7.google.com' (illegal)
> zone abcxyz.com/IN: abcxyz.com/MX 'aspmx5.googlemail.com' (out of zone) is a 
> CNAME 'mail-yx0-f8.google.com' (illegal)
> zone abcxyz.com/IN: loaded serial 2009102902
> 
> All the google domain names are canonical, not CNAMEs.
> 
> no views, /etc/hosts is fine, no NIS in use.  
> 
> Old Linux is broken?
> 
> thanks
> Len
> 
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org