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--- wiki:add_additional_ip_address_interface [2022/09/19 21:38] – created antisa
+++ wiki:add_additional_ip_address_interface [2025/10/14 12:22] (current) – [Add additional ip address on interface] remove duplicate code antisa
@@ Line 1: / Line 1: @@
-{{tag>networking}}
+{{tag>networking routing ipv4}}
 ====== Add additional ip address on interface ======
+First make sure the interface is up:
+  ip link set eth0 up
+then add an address:
   ip addr add 94.130.84.168/27 dev eth0
-  root@server:~# ip addr add 94.130.84.168/27 dev eth0
 ///etc/network/interfaces// example (for persistence over reboot):
@@ Line 55: / Line 56: @@
 </code>
+===== Adding routes =====
+Change IPs accordingly:
+If you get an error:
+  # ip route add default via 15.235.15.254 dev br0
+  Error: Nexthop has invalid gateway.
+You have to add a route to the gateway itself:
+  ip route add 15.235.15.0/24 dev br0 src 15.235.15.201 metric 100
+Then you can add a default route.
+  ip route add default via 15.235.15.254 dev br0
+If you get:
+  connect: Network unreachable
+when trying to ping an address, you have to add a default route.
 ====== Tested on ======
   *
 ====== See also ======
+  * [[set_up_ipv6_host_vm|Set up IPv6 on host and VM]] - example of IPv6 addresses and routes
 ====== References ======
+  * https://access.redhat.com/sites/default/files/attachments/rh_ip_command_cheatsheet_1214_jcs_print.pdf