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fwbuilder, ipv6 and Java

January 25, 2006 Leave a comment

Looks like fwbuilder does not currently support ipv6:
http://lists.debian.org/debian-firewall/2005/04/msg00063.html

It creates scripts with the following lines:

ip6tables -L -n > /dev/null 2>&1 &

I’am on an ipv4 network so I could just have forget about this. But there is problem with Java applications. InetAddress.getLocalHost() returns an ipv6 address (see java.net.InetAddress sources).

A workaround is to remove the “ip6tables” lines from the firewall script and leave all the ipv6 traffic open.

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