I requested ipv6 for the monkey house, that was simple getting it work well i made mountain out of a molehill.
My trouble began when i had neighbourhood prefix and pd prefix both different
The x address is the public interface and the y address is the lan assignment secret decoder rings help here and ipv6 existed and then disappeared.
I restarted many times, Fortunately ipv4 remained working. although ipv6 config is an voodoo art. As i needed new routers not many of you will even be able to get ipv6 with new routers.
Eventually i got something to work which remained up, ipv6 is slow bonding from the isp’s infrastructure, so while ipv4 is up within seconds pv6 takes a couple of minutes to connect and it say unable to connect to google if you try to ping it from anywhere during this stage
I had a problem with an ipv4 router which means internally the monkey houses office lan still cant get ipv6. but our mail hosts in the zoo do.
So eventually i win part of the war.
Ipv6 on the local lan comes with issues i cannot seem to do::1/631, yes 127.0.0.1:631 for printers nameservers can also end up not memorable eg 184.108.40.206* instead 2xxx::xxxx:yyyy:2: aaaa:bbb:cccc:dddd.
I can not remember that.
Ipv6 has some merit and when ipv4 does exhaust its supply it will need help becoming the protocol after all who still uses spx protocol. Yes it has autoconfig but that assumes you do not run a network.
So its not a replacement for ipv4 and rfc1918 ranges.
*free banana skin if know where this goes or does – collect from the zoo.