On Sun, Dec 20, 2015 at 09:23:04PM -0500, Chuck Church wrote: > I agree that a /48 or /56 being reserved for business > customers/sites is reasonable. But for residential use, I'm having a hard > time believing multi-subnet home networks are even remotely common outside > of networking folk such as the NANOG members. A lot of recent IPv4 devices > such as smart TVs have the ability to auto-discover things they can talk to > on the network. If we start segmenting our home networks to keep toasters > from talking to thermostats, doesn't this end up meaning your average home > user will need to be proficient in writing FW rules? Bridging an entire > house network isn't that bad.
Depends on how many devices you have on it. Once you start filling your home with Internet of Unpatchable Security Holes devices, having everything on a single ethernet segment might start to get a little... noisy. Thankfully, IPv6 has well-defined multicast scopes, which makes it trivially easy to do cross-L2-segment service discovery without needing to resort to manually berking around with firewall rules. - Matt
