Description of problem: When we have some tests about the following scenaria (1)"Test v6LC.2.3.3: Redirected On-link: Invalid" and (2)"Redirected to Alternate Router: Valid",some tests fails because of not observing a Neighbor Solicitation packet. Version-Release number of selected component (if applicable): kernel-2.6.18-43.el5 Software Environment: Testee(NUT): RHEL5 Kernel:2.6.18-43.el5 Tester(TN): FreeBSD6.2 How reproducible: every time Steps to Reproduce: 1. Configure TAHI test environment. 2. Run the TAHI test suite 3. After the test completes, check for the results Actual results: TN can not observe a Neighbor Solicitation packet. Expected results: TN should observe a Neighbor Solicitation packet. Additional info: For more information,please refer to http://focus.brisbane.redhat.com/~zwu/CoreProtocol/20071024/Self_Test_1-4-8_p2_host/nd.p2/index.html (1) 187 Part H: ICMPv6 length is less than 40 Octets (2) 188 Part I: Option has Length Zero (3) 189 Part A: dst=link-local, w/o TLL, w/o Redirected Header (4) 190 Part B: dst=link-local, w/o TLL, w/ Redirected Header