>>> EHLO [ip6:ip6:ip6:ip6:ip6:ip6:ip6:ip6]
>>> .
??? 250
-<<< 250 OK id=10HmaX-0005vi-00
+<<< 250 OK id=10HmaX-000000005vi-0000
>>> ehlo [IPV6:ip6:ip6:ip6:ip6:ip6:ip6:ip6:ip6]
??? 250-
<<< 250-myhost.test.ex Hello [IPV6:ip6:ip6:ip6:ip6:ip6:ip6:ip6:ip6] [ip6:ip6:ip6:ip6:ip6:ip6:ip6:ip6]
>>> EHLO [IPV6:ip6:ip6:ip6:ip6:ip6:ip6:ip6:ip6]
>>> .
??? 250
-<<< 250 OK id=10HmaY-0005vi-00
+<<< 250 OK id=10HmaY-000000005vi-0000
>>> ehlo [IPV6:V6NET:0:12:1:a00:20ff:fe86:a062]
??? 250-
<<< 250-myhost.test.ex Hello [IPV6:V6NET:0:12:1:a00:20ff:fe86:a062] [ip6:ip6:ip6:ip6:ip6:ip6:ip6:ip6]
>>> EHLO [IPV6:V6NET:0:12:1:a00:20ff:fe86:a062]
>>> .
??? 250
-<<< 250 OK id=10HmaZ-0005vi-00
+<<< 250 OK id=10HmaZ-000000005vi-0000
>>> ehlo ip6:ip6:ip6:ip6:ip6:ip6:ip6:ip6
??? 501
<<< 501 Syntactically invalid EHLO argument(s)