Wireshark · Display Filter Reference: Internet Relay Chat

Field name	Description	Type	Versions
irc.ctcp	CTCP	Character string	1.8.0 to 4.4.2
irc.ctcp.command	Command	Character string	4.2.0 to 4.4.2
irc.ctcp.parameters	Parameters	Character string	4.2.0 to 4.4.2
irc.missing_end_delimiter	Missing ending tag delimiter (0x01)	Label	1.12.0 to 4.4.2
irc.prefix_missing_ending_space	Prefix missing ending	Label	1.12.0 to 4.4.2
irc.request	Request	Character string	1.0.0 to 4.4.2
irc.request.command	Command	Character string	1.8.0 to 4.4.2
irc.request.command.missing	Request has no command	Label	1.12.0 to 4.4.2
irc.request.command.numeric	Numeric command not allowed in request	Label	1.12.0 to 4.4.2
irc.request.command_parameter	Parameter	Character string	1.8.0 to 4.4.2
irc.request.prefix	Prefix	Character string	1.8.0 to 4.4.2
irc.request.trailer	Trailer	Character string	1.8.0 to 4.4.2
irc.response	Response	Character string	1.0.0 to 4.4.2
irc.response.command	Command	Character string	1.8.0 to 4.4.2
irc.response.command.missing	Response has no command	Label	1.12.0 to 4.4.2
irc.response.command_parameter	Parameter	Character string	1.8.0 to 4.4.2
irc.response.num_command	Command	Unsigned integer (16 bits)	1.8.11 to 1.8.15, 1.10.3 to 4.4.2
irc.response.prefix	Prefix	Character string	1.8.0 to 4.4.2
irc.response.trailer	Trailer	Character string	1.8.0 to 4.4.2
irc.tag_data_invalid	Tag data outside of NOTICE or PRIVMSG command	Label	1.12.0 to 4.4.2