Date: Mon, 25 Aug 2008 10:10:04 GMT From: "Artis Caune" <artis.caune@gmail.com> To: freebsd-net@FreeBSD.org Subject: Re: kern/126714: [carp] CARP interface renaming makes system no longer respond on the virtual IP address Message-ID: <200808251010.m7PAA4Mk018658@freefall.freebsd.org>
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The following reply was made to PR kern/126714; it has been noted by GNATS. From: "Artis Caune" <artis.caune@gmail.com> To: bug-followup@freebsd.org Cc: slawek.zak@gmail.com Subject: Re: kern/126714: [carp] CARP interface renaming makes system no longer respond on the virtual IP address Date: Mon, 25 Aug 2008 13:05:55 +0300 Same for me, but when I rename carp interface to original name, everything works. When you change carp0 name to new_name, ifconfig will: - announce that carp0 is gone (departure) - copy new_name to if_xname - announce that new_name has arrived carp check only departure events. When you change name of carp interface, mac address also change: from 00:00:5e:00:01:08 to 70:31:00:00:5e:00 (for me) And because new mac address is no longer CARP mac address, carp_forus() fail, M_PROMISC flag is not cleared and frame is discarded. If you need change names at run time and not in rc.conf, then you should reinitialize carp interface: # ifconfig new_name vhid 1 pass testpass 192.168.0.2/24 or set promisc flag on em0/em1 :) btw, don't change name to "carp" or your box will panic. p.s. if you change name to underlying em0/em1/lagg/vlan interface, you should also reinitialize carp interface or you will see: carp_input: packet received on non-carp interface: bce0 -- regards, Artis Caune <----. CCNA <----|==================== <----' didii FreeBSD
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