Slackware 12 by default loads the ipv6 module and assigns interfaces an IPv6 address which several daemons then try to bind to.. I don't think I currently use IPv6 for anything* so I disabled it.. I know I could recompile a kernel without IPv6 support but for now I've turned it off through a file in modprobe.d:
alias net-pf-10 off
alias ipv6 off
Is this a smart thing to do? Will I run into any problems if I disable IPv6 or remove it from the kernel completely? Will I lose any functionality, other than not being able to watch KAME's dancing turtle?
What about security? I understand that, with IPv6 enabled, I would need to set up ip6tables alongside regular iptables for firewalling (or use pf instead).. can it be said then, that disabling ipv6 reduces the system's attack surface? Does support, or lack thereof, from my ISP factor in?
Input and suggested reading appreciated!
*I use NAT on my IPv4 network, don't do any 6to4 tunneling, and as far as I know, I don't connect to any IPv6 services.. though I'm not sure how transparent that is these days.