Merge pull request #1184 from fail2ban/gh-1164-fix

Bugfix for dnsToIp resolver for fqdn with large list of IPs;

ChangeLog

@@ -11,6 +11,7 @@ ver. 0.9.4 (2015/XX/XXX) - wanna-be-released
 
 - Fixes:
    * roundcube-auth jail typo for logpath
+   * Fix dnsToIp resolver for fqdn with large list of IPs (gh-1164)
 
 - New Features:
 

fail2ban/server/filter.py

@@ -855,8 +855,9 @@ class DNSUtils:
 		""" Convert a DNS into an IP address using the Python socket module.
 			Thanks to Kevin Drapel.
 		"""
+		# retrieve ip (todo: use AF_INET6 for IPv6)
 		try:
-			return set(socket.gethostbyname_ex(dns)[2])
+			return set([i[4][0] for i in socket.getaddrinfo(dns, None, socket.AF_INET, 0, socket.IPPROTO_TCP)])
 		except socket.error, e:
 			logSys.warning("Unable to find a corresponding IP address for %s: %s"
 						% (dns, e))