I disable v6 on any linux install unless I specifically plan on using it. The fact that it can easily be accessible over lan and over the internet due to how good the auto addressing and link local addresses work is a concern.
Please don't do this. Any firewall will work for security concerns, and RFC4941 support will work for privacy concerns.
I haven't seen a consumer CPE that both supports v6 and doesn't firewall off incoming v6 connections, and I haven't seen any operating system in years that doesn't enable RFC4941 by default.
I will continue to do this. Like I said,if it is planned use it will be enabled and specific firewall rules will be implemented to allow safe use. Not everyone has same requirements.minimizing attack surface ,reducing admin overhead and being explicit about configuration items are some of my needs. V4 is no different, i almost never enable dhcp and might even disable ARP. V4 happens to just be configured explicitly by default.
I haven't seen a consumer CPE that both supports v6 and doesn't firewall off incoming v6 connections, and I haven't seen any operating system in years that doesn't enable RFC4941 by default.