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I had the same problem ssh and x-forwarding after disabling ipv6 in
sysctl. It seems that disabling ipv6 using sysctl breaks both ssh x-forwarding and java networking, at least in my case. To disable ipv6 I created this file: cat /etc/sysctl.d/disableipv6.conf #Equal to sysctl -w net.ipv6.conf.all.disable_ipv6=1 net.ipv6.conf.all.disable_ipv6=1 As explained in the comments here: http://www.debian-administration.org/article/Disabling_IPv6_under_a_2.6_kernel Re-enabling ipv6 made both ssh x-forwarding and java networking work. For reference, for Java to work you need to change the value of net.ipv6.bindv6only in sysctl to 0 as explained here: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=560044 Regards, Walter |