I think it is automatic if there is already IP from the same subnet on that interface.
$ ip a add 192.168.122.1/24 dev virbr0 # no secondary flag yet, first address of 192.168.122.0/24 $ ip a add 192.168.122.254/24 dev virbr0 label virbr0:1 # secondary flag present, it is second address of 192.168.122.0/24 on that device -- Petr Menšík Software Engineer Red Hat, http://www.redhat.com/ email: pemen...@redhat.com PGP: 65C6C973 ----- Original Message ----- From: "Simon Kelley" <si...@thekelleys.org.uk> To: dnsmasq-disc...@thekelleys.org.uk Sent: Friday, February 17, 2017 1:16:59 PM Subject: Re: [Dnsmasq-discuss] Support of labels in --interface -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 15/02/17 17:38, Petr Mensik wrote: > Hi! > Let's say my configuration is: 4: virbr0: > <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP > group default qlen 1000 link/ether 52:54:00:2b:ee:d3 brd > ff:ff:ff:ff:ff:ff inet 192.168.122.1/24 brd 192.168.122.255 scope > global virbr0 valid_lft forever preferred_lft forever inet > 192.168.122.254/24 scope global secondary virbr0:1 valid_lft > forever preferred_lft forever > Quick question from the lazy: how do you set the "secondary" flag on the second address? ip addr add <address> dev virbr0 label virbr0:1 doesn't seem to. Dunno if it matters, just want to replicate this exactly........ Cheers, Simon. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAEBCAAGBQJYpum7AAoJEBXN2mrhkTWi74gP/A1nDuRres/jwNlJBBa1Ooa1 GFS3gGsMTxlZpank4bsH9MUnezzLMwkTa/F3Pz2jztnVzGwSplmZqtqFQErYaLWR wyJXGGeNNlRt/u2dChLMWTO/qyf2AVfa+Ght66npzwJ0laVVkBishPHDcCKPhLIY Rv5+WSsgqFgUwMFpjj8xj0WJJU7iNjCG4G9dwlmHu9kElwnW9xiL9dC6dDZuLOrd GHlDodp7c5L5R7UQkvnfmlLWCOgz6/21Z1LkLBlsDyjpQcX+e7G5shb7r2UEEX0o 5RX2+3utnyGAGysiaVF9logiGCN7Hx/dBhvwtrvdcDSxa944GavLtHVSftuwIGZG RDZIMea2DixSJUuOjGJ0MIfLg6IeoigSGIlNgLP++EupOz6fqxT2iJbaQ0M4Mqtm H6haQkMT7Xj5OUfdfptXmR89idQRoPP7WIGU8CPQrs70vLpdGwKoF7nbT3KqeVpK C+9CvHAxFKtWoElIzVPn7Oa2Zz/alXBBXdIfRg5TEP0QrJZCgPBixZ9Yy5F2fVxE fP88SazdH7Yq6HDlS6KfPPq6N+0IklD0Y6GoBcchxxPpJpKFCkhXAS8EKFb04QLg ZgPOzu73LFmed9YAXSFggR+eMmxN2M5ImPidiW8/xLCvHgtvn3/EOEi3VcU2gOS6 wczS9ivnbdarmpyPP4i/ =8wXW -----END PGP SIGNATURE----- _______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss _______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss