SNAC(01,13)  SRV_MOTD  

Server send this during protocol negotiation sequence. Various docs call this SNAC as "message of the day" but it looks like that ICQ2K+ ignores this SNAC completely.

 00 01   word   SNAC family
 00 13   word   SNAC subtype
 00 00   word   SNAC flags
 xx xx xx xx   dword   SNAC request-id
 xx xx   word   motd message type
 00 02   word   TLV.Type(0x02) - unknown value (ICQ only)
 00 02   word   TLV.Length
 00 1E   word   Unknown value
 00 03   word   TLV.Type(0x03) - unknown value (ICQ only)
 00 02   word   TLV.Length
 04 B0   word   Unknown value
 00 0B   word   TLV.Type(0x0B) - motd message
 xx xx   word   TLV.Length
 xx ..   string   Motd message string

Example SNAC dumps with flap header: 
 
  2A 02 3E 00 00 18 00 01  00 13 00 00 82 95 E6 5C *.>............\
  00 05 00 02 00 02 00 1E  00 03 00 02 04 B0       ..............

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