u - Client Username
Syntax: <id> u <username>
+Syntax: <id> u
Example: 5 u notbuddha
States: REGISTER(1)
Next State: -
Comments: Indicates a more reliable username for the client.
Compatibility: This is an Undernet extension and ircd does not send
it. It is enabled by the iauth instance requesting the U policy.
+ If the identd lookup fails for a user, no username is passed.
n - Client Nickname
Syntax: <id> n <nickname>
Comments: Indicates that the specified client should be disconnected
for the reason given. Operators should be notified.
+d - "Soft" Done Checking
+Syntax: d <id> <remoteip> <remoteport>
+Example: d 5 192.168.1.10 23367
+States: REGISTER, HURRY
+Next State: -
+Comments: Indicates that the iauth instance has no objection to letting
+ the specified client onto the network, but that some further work is
+ in process. In particular, an account stamp and/or connection class
+ might be available later.
+Compatibility: This is an Undernet extension and ircd does not support
+ this message.
+
D - Done Checking
Syntax: D <id> <remoteip> <remoteport> [class]
Example: D 5 192.168.1.10 23367