[krbdev.mit.edu #6741] bug report: "too many SRV records" becomes "no SRV records"

["Richard E. Silverman" via RT]

The following message is a courtesy copy of an article
that has been posted to comp.protocols.kerberos as well.


In 1.8.1, there is the following code in src/lib/krb5/os/dnsglue.c:

   krb5int_dns_init(struct krb5int_dns_state **dsp,
                    char *host, int nclass, int ntype)
   {
   ...
     nextincr = 2048;
     maxincr = INT_MAX;
   ...

One day, due to an error, the number of KDC SRV records for one of our
realms doubled from 27 to 54... and KDC lookups via DNS prompty broke.  I
bumped up the nextincr value above, and it started working again.
Probably not the right fix, but just letting you know that there's a bug
here.

-- 
  Richard Silverman
  res at qoxp.net