Add DSAAuthentication=yes flag to SSH [GH-1900]

CHANGELOG.md

@@ -37,6 +37,8 @@ BUG FIXES:
   - NFS shared folders with single quotes in their name now work properly. [GH-1166]
   - Debian/Ubuntu request DHCP renewal when hostname changes, which will
     fix issues with FQDN detecting. [GH-1929]
+  - SSH adds the "DSAAuthentication=yes" option in case that is disabled
+    on the user's system. [GH-1900]
 
 ## 1.2.3 (July 9, 2013)
 

lib/vagrant/util/ssh.rb

@@ -100,6 +100,7 @@ module Vagrant
         # Command line options
         command_options = [
           "-p", options[:port].to_s,
+          "-o", "DSAAuthentication=yes",
           "-o", "LogLevel=FATAL",
           "-o", "StrictHostKeyChecking=no",
           "-o", "UserKnownHostsFile=/dev/null"]