If Host 2 does not respond to ICMPv6 Echo Request (this can
be verified from the Router), on Windows 7 you can run
Control Panels - Windows Firewall - Advanced Settings, then
choose Inbound rule - New Rule - Custom - All programs -
Protocol type: ICMPv6.
Remark: Probably you don't need to create a new rule.
Locate the Inbound Rules for "File and Printer Sharing (Echo
Request - ICMPV6-in), and enable the ones corresponding to
"Domain" and "Public".
Aminul Haque Chowdhury,
mesh-under routing in 6LoWPAN, Proceedings of the 2009
International Conference on Wireless Communications and Mobile
Computing (IWCMC '09), pp. 1208-1212 , New York, USA, 2009.
E. Kim, D. Kaspar, C. Gomez and C. Bormann,
Problem Statement and Requirements for
IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN)
IPv4 Multihoming Practices and Limitations (RFC 4116)
Architectural Approaches to Multi-Homing for IPv6 (RFC 4177)
Threats relating to IPv6 Multihoming Solutions (RFC 4218)
Things MULTI6 Developers Should Think About (RFC 4219)