Netgear FVS318Gv2 – ProSAFE VPN Firewall Series 参照マニュアル

When you specify a reserved IP address for a computer or device on the LAN (based on the 
MAC address of the device), that computer or device always receives the same IP address 
each time it accesses the VPN firewall’s DHCP server. Assign reserved IP addresses to 
servers or access points that require permanent IP address settings. The reserved IP 
address that you select must be outside the DHCP server pool.

To reserve and bind an IP address to a MAC address, select Reserved (DHCP Client) from 
the IP Address Type list on the LAN Groups screen and save the binding by clicking the 
Save Binding button on the same screen. For detailed steps, see 

The reserved address is not assigned until the next time the computer or device contacts the 
VPN firewall’s DHCP server. Reboot the computer or device, or access its IP configuration 
and force a DHCP release and renew.

The saved binding is also displayed on the IP/MAC Binding screen.

An IPv6 LAN typically functions with site-local and link-local unicast addresses. Each 
physical interface requires an IPv6 link-local address that is automatically derived from the 
MAC addresses of the IPv4 interface and that is used for address configuration and neighbor 
discovery. (Normally, you would not manually configure a link-local address.)

Traffic with site-local or link-local addresses is never forwarded by the VPN firewall (or by any 
other router), that is, the traffic remains in the LAN subnet and is processed over the default 
VLAN only. A site-local address always starts with FEC0 (hexadecimal); a link-local unicast 
address always starts with FE80 (hexadecimal). To forward traffic from sources with a 
site-local or link-local unicast address in the LAN, a DHCP server is required. For more 
information about link-local unicast addresses, see 

Because each interface is automatically assigned a link-local IP address, it is not useful to 
assign another link-local IP address as the default IPv6 LAN address. The default IPv6 LAN 
address is a site-local address. You can change this address to any other IPv6 address for 
LAN use.

Site-local addresses, that is, addresses that start with FEC0, are 
depreciated. However, NETGEAR implements a site-local address as 
a 

temporary default IPv6 LAN address that you can replace with 

another LAN address. The firewall restricts external communication of 
this default site-local address. 

This section contains the following topics: