Try # ip link add lo1 type dummy # ip a add 10.10.10.10/24 dev lo1 The ifconfig tool is deprecated. M. Quidquid latine dictum sit, altum videtur. -----Original Message----- From: RICCARDO RUSSO <riccardo.russo79@gmail.com> To: bird-users@network.cz Sent: Thu, 12 Apr 2018 4:41 PM Subject: Unix virtual interfaces Hello, I'm running bird 2.0.2 on centOS I've configured 2 virtual interfaces (eth1:1 and lo:1) When I run show protocol I don't see them. Are virtual interfaces supported by bird? I need it in order to advertise by BGP lo:1 R --------------------------------------- # ifconfig eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 163.162.230.198 netmask 255.255.255.240 broadcast 163.162.230.207 inet6 fe80::2e:a6ff:fe66:5a27 prefixlen 64 scopeid 0x20<link> ether 02:2e:a6:66:5a:27 txqueuelen 1000 (Ethernet) RX packets 14271 bytes 996507 (973.1 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 2746 bytes 314846 (307.4 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.200.8 netmask 255.255.255.0 broadcast 192.168.200.255 inet6 fe80::9034:56ff:feee:eeee prefixlen 64 scopeid 0x20<link> ether 92:34:56:ee:ee:ee txqueuelen 1000 (Ethernet) RX packets 16109 bytes 1066648 (1.0 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 7805 bytes 514801 (502.7 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 eth1:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 10.10.10.10 netmask 255.255.255.255 broadcast 10.255.255.255 ether 92:34:56:ee:ee:ee txqueuelen 1000 (Ethernet) lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 1 (Local Loopback) RX packets 6 bytes 416 (416.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 6 bytes 416 (416.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 lo:1: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 163.162.35.89 netmask 255.255.255.255 loop txqueuelen 1 (Local Loopback) --------------------------------------- # birdc show interfaces BIRD 2.0.2 ready. lo up (index=1) MultiAccess AdminUp LinkUp Loopback Ignored MTU=65536 127.0.0.1/8 (Preferred, scope host) 163.162.35.89/32 (scope univ) ::1/128 (Preferred, scope host) eth0 up (index=2) MultiAccess Broadcast Multicast AdminUp LinkUp MTU=1500 163.162.230.198/28 (Preferred, scope univ) fe80::2e:a6ff:fe66:5a27/64 (Preferred, scope link) eth1 up (index=3) MultiAccess Broadcast Multicast AdminUp LinkUp MTU=1500 192.168.200.8/24 (Preferred, scope site) 10.10.10.10/32 (scope site) fe80::9034:56ff:feee:eeee/64 (Preferred, scope link) Rr