Passing Client Machine IP Address to SQL on Existing queries without adding as Parameter - SQL

Passing Client Machine IP Address to SQL on Existing queries without
adding as Parameter - SQL

Is there a way to get Client IP Address (for auditing purpose) for
existing update, insert queries without adding it as a parameter.
Scenario: I have a ASP.Net application hosted over intranet and using
Subsonic for executing queries. Now the application has gone very big with
too many insert, update, delete statements. Now there is a requirement for
Audit logs to be maintained. For this purpose I have added triggers on my
tables for insert, update and delete queries and my Audit table gets
updated accordingly except with IPAddress / Client Identity who have made
the request. Now, I can't afford to add one extra parameter to each of
these statements.
Is there any provision in SQL or ASP.Net so that I can store IP Address or
Host Name with minimum efforts and changes in my existing code.
Seen SUSER_NAME, HOST_NAME but I think it will give me my Server IP
Address where application is hosted.
Sorry for my English.