Disable IPv6 in Debian Lenny Linux

And here is how to do this:

• At first the stuff every web site is telling us: In /etc/modprobe.d/aliases replace/add the following mappings: alias net-pf-10 off alias ipv6 off (I found this at fak3r.com)
• If you are using a firewall script which loads all available module before setting up the firewall, add the following lines to /etc/modprobe.d/aliases: alias ip6_queue.ko off alias ip6table_filter.ko off alias ip6table_mangle.ko off alias ip6table_raw.ko off alias ip6table_security.ko off alias ip6_tables.ko off alias ip6t_ah.ko off alias ip6t_eui64.ko off alias ip6t_frag.ko off alias ip6t_hbh.ko off alias ip6t_hl.ko off alias ip6t_HL.ko off alias ip6t_ipv6header.ko off alias ip6t_LOG.ko off alias ip6t_mh.ko off alias ip6t_REJECT.ko off alias ip6t_rt.ko off alias nf_conntrack_ipv6.ko off You can do this by executing: for module in `ls /lib/modules/YOUR-KERNEL-VERSION/kernel/net/ipv6/netfilter/`; do echo "alias $module off" >> /etc/modprobe.d/aliases; done

Hope this helps :-)