New submission from Nick Carboni: socket.gethostbyaddr seems to be equating loopback addresses regardless of IP protocol version.
In both versions tested (2.7.5 and 3.4.3) the ordering of the entries in my /etc/hosts file determines the result I get, rather than what address I'm querying for. For example: /etc/hosts: ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 result: >>> import socket >>> socket.gethostbyaddr("127.0.0.1") ('localhost', ['localhost.localdomain', 'localhost6', 'localhost6.localdomain6'], ['127.0.0.1']) Then if I change the ordering of the entries in /etc/hosts as follows: 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 result: >>> import socket >>> socket.gethostbyaddr("127.0.0.1") ('localhost', ['localhost.localdomain', 'localhost4', 'localhost4.localdomain4'], ['127.0.0.1']) I would expect gethostbyaddr to return only the hostnames associated with the given address regardless of the ordering of the entries in /etc/hosts. ---------- messages: 278580 nosy: carbonin priority: normal severity: normal status: open title: socket gethostbyaddr returns IPv6 names for 127.0.0.1 type: behavior versions: Python 2.7, Python 3.4 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue28431> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com