>>> EHLO [ip4.ip4.ip4.ip4]
>>> .
??? 250
-<<< 250 OK id=10HmaX-0005vi-00
+<<< 250 OK id=10HmaX-000000005vi-0000
>>> ehlo [IPV4:ip4.ip4.ip4.ip4]
??? 250-
<<< 250-myhost.test.ex Hello [IPV4:ip4.ip4.ip4.ip4] [ip4.ip4.ip4.ip4]
>>> EHLO [IPV4:ip4.ip4.ip4.ip4]
>>> .
??? 250
-<<< 250 OK id=10HmaY-0005vi-00
+<<< 250 OK id=10HmaY-000000005vi-0000
>>> ehlo ip4.ip4.ip4.ip4
??? 250-
<<< 250-myhost.test.ex Hello ip4.ip4.ip4.ip4 [ip4.ip4.ip4.ip4]
>>> EHLO ip4.ip4.ip4.ip4
>>> .
??? 250
-<<< 250 OK id=10HmaZ-0005vi-00
+<<< 250 OK id=10HmaZ-000000005vi-0000
>>> ehlo [V4NET.1.2.3]
??? 250-
<<< 250-myhost.test.ex Hello [V4NET.1.2.3] [ip4.ip4.ip4.ip4]
>>> EHLO [V4NET.1.2.3]
>>> .
??? 250
-<<< 250 OK id=10HmbA-0005vi-00
+<<< 250 OK id=10HmbA-000000005vi-0000
>>> quit
??? 221
<<< 221 myhost.test.ex closing connection