Interface and Routes

Linux

See also:

• https://www.cyberciti.biz/faq/linux-ip-command-examples-usage-syntax/
• https://www.linode.com/docs/guides/how-to-use-the-linux-ip-command/

The syntax is as follows to add an IPv4/IPv6 address:

ip addr add {ip_addr/mask} dev {interface}

To add a new route, the syntax is:

ip route add {NETWORK/MASK} via {GATEWAYIP}
ip route add {NETWORK/MASK} dev {DEVICE}

## Add default route using ip ##
ip route add default {NETWORK/MASK} dev {DEVICE}
ip route add default {NETWORK/MASK} via {GATEWAYIP}

For example, to add a plain route to network 192.168.1.0/24 via gateway 192.168.1.254:

ip route add 192.168.1.0/24 via 192.168.1.254

Darwin/BSD

See also:

• macOS:
  • https://dev.to/dunithd/how-to-set-a-static-ip-address-in-macos-using-command-line-4j1b
• BSD:
  • https://man.freebsd.org/cgi/man.cgi?route
  • https://man.freebsd.org/cgi/man.cgi?ifconfig
  • https://www.cyberciti.biz/faq/how-to-configure-static-ip-address-on-freebsd/

To add an IPv4/IPv6 address in BSD family systems:

• IPv4: ifconfig <interface> <address> netmask <netmask>
• IPv6: ifconfig <interface> inet6 <address> prefixlen <prefixlength>

To add routes in BSD family systems:

• IPv4: route add -net <network_address/prefixlength> <local_address>
• IPv6: route add -net -inet6 <network_address/prefixlength> <local_address>

Windows

See also:

• https://techgenix.com/configurestaticipwiththenetshcommand-lineutility/
• Netsh Commands:
  • https://learn.microsoft.com/en-us/windows-server/networking/technologies/netsh/netsh-contexts
  • https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc770948(v=ws.10)
  • https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc731521(v=ws.10)

To add an IPv4/IPv6 address on Windows:

• IPv4: netsh interface ipv4 set address <interface> static <address> <netmask>
• IPv4: netsh interface ipv6 set address <interface> static <address/prefixlength>

For example, to add a static IPv4 address for "NetLAN1" and specify both the subnet mask and gateway, type:

netsh interface ipv4 set address "NetLAN1" static <ip_address> <subnet_mask> <gateway>

To add routes on Windows:

• IPv4: netsh interface ipv4 add route <network_address> <netmask> <interface> <nexthop>
• IPv4: netsh interface ipv6 add route <network_address/prefixlength> <interface> <nexthop>