Exhibit (b)

                          IXIS Advisor Funds Trust II
                           Section 906 Certification

   In connection with the report on Form N-CSR for the period ended
December 31, 2005 for the Registrant (the "Report"), the undersigned each
hereby certifies to the best of his knowledge, pursuant to section 906 of the
Sarbanes-Oxley Act of 2002, that:

   1. the Report complies with the requirements of Section 13(a) or 15(d) of
the Securities and Exchange Act of 1934, as applicable; and

   2. the information contained in the Report fairly presents, in all material
respects, the financial condition and results of operations of the Registrant.

By:                                 By:
President & Chief Executive Officer Treasurer
IXIS Advisor Funds Trust II         IXIS Advisor Funds Trust II
----------------------------------- ---------------------------------

/s/ John T. Hailer                  /s/ Michael C. Kardok
----------------------------------- ---------------------------------
John T. Hailer                      Michael C. Kardok

Date: February 27, 2006             Date: February 27, 2006

A signed original of this written statement required by Section 906, or other
document authenticating, acknowledging, or otherwise adopting the signature
that appears in typed form within the electronic version of this written
statement required by Section 906, has been provided to the IXIS Advisor Funds
Trust II, and will be retained by the IXIS Advisor Funds Trust II and furnished
to the Securities and Exchange Commission (the "Commission") or its staff upon
request.