(ITS#5251) getaddrinfo might return duplicate results

[rhafer@suse.de]

Full_Name: Ralf Haferkamp
Version: All
OS: Linux, glibc 2.7
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (89.166.161.148)


Newer versions of glibc (2.7) in my case might return duplicate addrinfo structs
in the results under certain circumstances. According to the friendly glibc
maintainer ;) this is not a bug:
http://sources.redhat.com/bugzilla/show_bug.cgi?id=4980
Unfortunately he doesn't give a reason for this change in behavior. 

BTW, I didn't find any reference in the related RFCs that state that the
getaddrinfo results need to be unique (nor the opposite).
In my current builds I simply patched slapd to check the getaddrinfo() results
for uniqueness in the slap_get_listner_addresses() function. Has anybody a
better idea how to fix this?