+ 0x00000400 SILC_UMODE_DETACHED
+
+ Marks that the client is detached from the SILC network.
+ This means that the actual network connection to the
+ client is lost but the client entry is still valid. The
+ detached client can be resumed at a later time. This
+ mode MUST NOT be set by client. It can only be set when
+ client has issued command SILC_COMMAND_DETACH. The server
+ sets this mode. This mode cannot be unset with this
+ command. It is unset when the client is resuming back to
+ the network and SILC_PACKET_RESUME_CLIENT packet is
+ received.
+
+ This flag MUST NOT be used to determine whether a packet
+ can be sent to the client or not. Only the server that
+ had the original client connection can make the decision
+ by noticising that the network connection is not active.
+ In this case the default case is to discard the packet.
+
+ If the <client mode mask> was not provided this command merely
+ returns the mode mask to the client.
+
+