Interfaces

Network → Interfaces is used to view which interfaces have been manually configured, to add a manually configured interface, and to edit an interface's manual configuration.

NOTE: typically the interface used to access the FreeNAS® administrative GUI is configured by DHCP. This interface will not appear in this screen, even though it is already dynamically configured and in use.

Figure 5.2a shows the screen that opens when you click Interfaces → Add Interface. Table 5.2a summarizes the configuration options when you Add an interface or Edit an already configured interface.

NOTE: when configuring multiple interfaces, they can not be members of the same subnet. Check the subnet mask if you receive an error when setting the IP addresses on multiple interfaces.

Figure 5.2a: Adding or Editing an Interface

Table 5.2a: Interface Configuration Settings

Setting	Value	Description
NIC	drop-down menu	select the FreeBSD device name; will be read-only field when edit an interface
Interface Name	string	description of interface
DHCP	checkbox	requires static IPv4 or IPv6 configuration if unchecked; note that only one interface can be configured for DHCP
IPv4 Address	IP address	set if DHCP unchecked
IPv4 Netmask	drop-down menu	set if DHCP unchecked
Auto configure IPv6	checkbox	if checked, use rtsold(8) to configure the interface; requires manual configuration if unchecked and wish to use IPv6
IPv6 Address	IPv6 address	must be unique on network
IPv6 Prefix Length	drop-down menu	match the prefix used on network
Options	string	additional parameters from ifconfig(8), one per line; for example: mtu 9000 will increase the MTU for interfaces that support jumbo frames

This screen also allows you to configure an alias for the interface. If you wish to set multiple aliases, click the "Add extra alias" for each alias you wish to configure.