Part $3$: Which IPv$6$ addresses are valid? For the invalid addresses, state what

makes it an invalid IPv$6$ address. $(5$ points each, $40$ points$)$

a$)2001$:db$8$:a$0$b:$12$f$0$::$0001$

b$)$ cdba:$0005$:$0000$:$0$h$05$:$0000$:$0325$:$0965$:$993$c

c$)2001$:$0$:a$0$b:$12$a$0$::$0001$

d$)$ fec$2$:$0005$:$0$:$8$ba:$84742300$

e$)={?}^{}1$

f$)$ ::ffff:$192$:$0$:$2$:$47$

g$)2001$::a$0$b:$12$a$0$::$0001$

h$)$ ab$12$:$4323$:$120$:$110$:$2301$:$1101$:bbca:$23$:$33$

Bonus: Is there an IPv$7?$ Be sure to cite your sources! $(5$ points$)$