-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 20.03.2015 14:38, Chris Adams wrote: > I'm looking into some network "weirdness", and I noticed that a > CentOS 6 system with multiple IP addresses (load balancer running > keepalived) is sending ARP requests from apparently random source > IPs. I would have thought that ARP requests would always come from > the interface's "primary" IP (especially since keepalived adds all > the virtual IPs with a /32 mask). > > This is probably not related to my problem, but I just thought it > was odd. Is there a way to control this? You may be running into the "arp flux" problem: http://blog.cj2s.de/archives/29-Preventing-ARP-flux-on-Linux.html HTH Sven -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQGcBAEBAgAGBQJVDWX6AAoJEAq0kGAWDrqlkxoL/2Lz1magdKlwWsLGD9CIzmio Z2eeUPHk7Ya/g8AU/LD6b37zF8tSXqj63cp4oh8Tp+KBNlpTzRm2664syAPpUi/K LsbXPgRWwBeN9LPlxKFAimnkFabIuTe7LJArcL5Mg1D08hepfGRY6gpbTmcI5BmC Tfq5bg5tBGQ8P0dFn0G8fOetdNITVR6iO1Imrw0vsiE9ENzUo1rjHDrf6EVgxfwe 76v+Au2+UbYtKNmV8zBWSfm7fcDYJd7QIcPSie0VNUOKX0Hc72BpmjkQuk0yrJMW D5V7AZVtKlwvGXci/Iwmfsej7kwqSTAnI1Jb1A6FM5cb1OcLVW+VJvG+cFJk1Myg DBNstgceobR+xV2oTzdNlttl7QMh8gQtHxP5Z+159YdClXEqIo5/JtoGH6odRn6u z1CzJZqfWOb0Hgy7seOCQ6iwAkqBH6zVgpy+mft5Z/TfDtX5KSCX6XazsYDGdQpq PvWoW4Ie0YM9IvMc7D7oLDAQxV/CylDmy/coZf+o0g== =fd9y -----END PGP SIGNATURE-----