<PAGE>
EXHIBIT 6
JOINT FILING AGREEMENT
In accordance with Rule 13k-1 under the Securities Exchange Act of
1934, as amended, each of the persons named below agrees to the joint filing on
behalf of each of them of a Statement on Schedule 13D (including amendments
thereto) with respect to Common Shares, par value 0.04 Dutch guilders per share,
of Indigo N.V., and further agrees that this Joint Filing Agreement be included
as an exhibit to such filing provided that, as contemplated by Section
13d-1(k)(1)(ii), no person shall be responsible for the completeness or accuracy
of the informa-tion concerning the other persons making the filing, unless such
person knows or has reason to believe that such information is inaccurate. This
Agreement may be executed in any number of counterparts, all of which taken
together shall constitute one and the same instruments.
Dated: October 27, 2000
HEWLETT-PACKARD COMPANY
By: /s/ Charles N. Charnas
-------------------------------------------
Name: Charles N. Charnas
Title: Assistant Secretary and
Senior Managing Counsel
Dated: October 27, 2000
HEWLETT-PACKARD EUROPE B.V.
By: /s/ Lawrence Tomlinson
-------------------------------------------
Name: Lawrence Tomlinson
Title: Managing Director
