D-Link DFL-1660 User Manual page 99

3.2. IPv6 Support
iv. Multiplex SAT
• Routes using IPv4 and IPv6 addresses can coexist in the same routing table set but a single route
cannot combine IPv4 and IPv6.
• Routing rules using IPv4 and IPv6 addresses coexist but a single rule cannot combine IPv4 and
IPv6.
• IPv6 cannot be used for VPN or with ALGs, IDP or traffic shaping.
IPv6 and High Availability
NetDefendOS High Availability (HA) does not fully support IPv6. Any IPv6 configuration objects
will be mirrored on both the HA master and slave units. However, if a failover occurs, state
information will be lost when one unit takes over processing from the other and IPv6 connections
will be lost.
In an HA configuration where interfaces have IPv6 enabled and IPv6 addresses assigned, there is no
private and shared IPv6 IP for each pair of interfaces. Each interface pair will have the same IPv6 IP
address on both master and slave. A private IPv6 interface address for each interface in a pair is not
possible.
IPv6 and Transparent Mode
Transparent Mode in NetDefendOS does not directly support IPv6 since Switched Routes cannot be
defined for IPv6 networks (see Section 4.7, "Transparent Mode").
However, it is possible to split networks transparently in the same way that Proxy ARP is used for
this with IPv4. Doing this for IPv4 is explained in Section 4.2.6, "Proxy ARP". The only difference
with IPv6 is that Neighbor Discovery (ND) is used instead of proxy ARP. The method is otherwise
the same and the two can be used alongside each other to split both IPv4 and IPv6 networks at the
same time.
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Chapter 3. Fundamentals