Date: Wed, 3 Feb 2016 16:12:38 -0500 From: Allan Jude <allanjude@freebsd.org> To: Chris H <bsd-lists@bsdforge.com>, freebsd-current@freebsd.org Subject: Re: arp flapping after udating system to 11-CURRENT. Message-ID: <56B26D46.1040709@freebsd.org> In-Reply-To: <32b24c64c963a725970eb423887bf53d@ultimatedns.net> References: <56B1ACDF.30807@pean.org> <fb6bc4b427bcf5285bbca4aaafd07016@ultimatedns.net> <d357d529bafe5a3093daefb90fd37d77@ultimatedns.net> <56B22721.7000507@freebsd.org> <32b24c64c963a725970eb423887bf53d@ultimatedns.net>
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[-- Attachment #1 --] On 2016-02-03 12:36, Chris H wrote: > On Wed, 3 Feb 2016 11:13:21 -0500 Allan Jude <allanjude@freebsd.org> wrote > >> On 2016-02-03 10:32, Chris H wrote: >>> On Wed, 03 Feb 2016 06:55:47 -0800 "Chris H" <bsd-lists@bsdforge.com> wrote >>> >>>> On Wed, 3 Feb 2016 08:31:43 +0100 Peter Ankerstål <peter@pean.org> wrote >>>> >>>>> Hi! >>>>> >>>>> I recently upgraded my system to 11-CURRENT (FreeBSD 11.0-CURRENT #0 >>>>> r295087: Sun Jan 31 10:21:31 CET 2016) and after that all of my other >>>>> devices in the network complains about arp-flapping: >>>>> >>>>> arp: 172.25.0.1 moved from 00:00:24:d0:9e:5d to 02:e8:ea:15:66:00 on re0 >>>>> arp: 172.25.0.1 moved from 02:e8:ea:15:66:00 to 00:00:24:d0:9e:5d on re0 >>>>> arp: 172.25.0.1 moved from 00:00:24:d0:9e:5d to 02:e8:ea:15:66:00 on re0 >>>>> >>>> FWIW I'm seeing this too. As it happened; I had just changed upstream >>>> providers, getting a larger static block (IP's), as well as updating >>>> my long overdue -CURRENT. So I simply blamed it on their (upstream) >>>> network. I'd love to get to the bottom of this, and would be happy to >>>> help. >>>> >>>> FreeBSD dev-box 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r294112: >>>> Mon Jan 18 14:25:01 PST 2016 root@dev-box:/usr/obj/usr/src/sys/DEVBOX >>>> amd64 >> >>>> src is at Revision: 406193 >>>> >>> Well, it would have helped if I had also mentioned that I'm not using >>> a bridge, and list the interfaces involved. :/ >>> >>> nfe0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 >>> options=82008<VLAN_MTU,WOL_MAGIC,LINKSTATE> >>> >>> This also occurs on my 9-STABLE boxes >>> re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 >>> >>> > options=8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LIN >>> KSTATE> >>> nfe0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 >>> options=82008<VLAN_MTU,WOL_MAGIC,LINKSTATE> >>> >>> nfe0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 >>> options=82008<VLAN_MTU,WOL_MAGIC,LINKSTATE> >>> >>> --Chris >>>> >>>>> >>>>> It seems to be flapping between the virtual mac of my bridge interface >>>>> and the actual mac adress on the physical interface. This was not the >>>>> case when i ran FreeBSD 10.2. Is there some settings I need to do? >>>>> >>>>> >>>>> bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu >>>>> 1500 >>>>> description: wired <-> wifi bridge >>>>> ether 02:e8:ea:15:66:00 >>>>> inet 172.25.0.1 netmask 0xffffff00 broadcast 172.25.0.255 >>>>> inet6 2001:470:de59::1 prefixlen 64 >>>>> inet6 fe80::2%bridge0 prefixlen 64 scopeid 0xb >>>>> nd6 options=1<PERFORMNUD> >>>>> groups: bridge >>>>> id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 >>>>> maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200 >>>>> root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 >>>>> member: wlan2 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> >>>>> ifmaxaddr 0 port 10 priority 128 path cost 66666 >>>>> member: wlan1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> >>>>> ifmaxaddr 0 port 9 priority 128 path cost 66666 >>>>> member: wlan0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> >>>>> ifmaxaddr 0 port 8 priority 128 path cost 22222 >>>>> member: em1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> >>>>> ifmaxaddr 0 port 2 priority 128 path cost 2000000 >>>>> >>>>> em1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 >>>>> mtu 1500 >>>>> description: wired LAN >>>>> >>>>> options=42098<VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,VLAN_HWTSO> >>>>> ether 00:00:24:d0:9e:5d >>>>> nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> >>>>> media: Ethernet autoselect (1000baseT <full-duplex>) >>>>> status: active >>>>> >>>>> >>>>> /Peter. >>>> >> >> Chris: >> If you are not using a bridge, please provide the complete output of >> ifconfig, and the log messages about the arp flapping, so we can see >> which two interfaces it is bouncing between. >> > Thank you very much for the reply, Allan. > This is what I'm working with/experiencing: > > Logs from just one of the offending boxes, the same is echoed in the > other boxes' logs, as well > Feb 3 08:04:48 udns kernel: arp: XX.YY.ZZ.85 moved from 00:24:81:ce:ba:87 to > 00:17:10:8e:5e:87 on re0 > Feb 3 08:05:58 udns kernel: arp: XX.YY.ZZ.83 moved from 40:61:86:cd:44:97 to > 00:17:10:8e:5e:87 on re0 > Feb 3 08:08:10 udns kernel: arp: XX.YY.ZZ.83 moved from 00:17:10:8e:5e:87 to > 40:61:86:cd:44:97 on re0 > Feb 3 08:13:00 udns kernel: arp: XX.YY.ZZ.84 moved from 00:17:10:8e:5e:87 to > 00:30:67:5e:29:5d on re0 > Feb 3 08:25:40 udns kernel: arp: XX.YY.ZZ.85 moved from 00:24:81:ce:ba:87 to > 00:17:10:8e:5e:87 on re0 > Feb 3 08:30:37 udns kernel: arp: XX.YY.ZZ.83 moved from 40:61:86:cd:44:97 to > 00:17:10:8e:5e:87 on re0 > Feb 3 08:36:05 udns kernel: arp: XX.YY.ZZ.84 moved from 00:30:67:5e:29:5d to > 00:17:10:8e:5e:87 on re0 > Feb 3 08:49:11 udns kernel: arp: XX.YY.ZZ.85 moved from 00:24:81:ce:ba:87 to > 00:17:10:8e:5e:87 on re0 > Feb 3 08:49:12 udns kernel: arp: XX.YY.ZZ.85 moved from 00:17:10:8e:5e:87 to > 00:24:81:ce:ba:87 on re0 > Feb 3 08:56:53 udns kernel: arp: XX.YY.ZZ.84 moved from 00:30:67:5e:29:5d to > 00:17:10:8e:5e:87 on re0 > Feb 3 09:09:09 udns kernel: arp: XX.YY.ZZ.84 moved from 00:17:10:8e:5e:87 to > 00:30:67:5e:29:5d on re0 > Feb 3 09:09:30 udns kernel: arp: XX.YY.ZZ.85 moved from 00:24:81:ce:ba:87 to > 00:17:10:8e:5e:87 on re0 > Feb 3 09:16:41 udns kernel: arp: XX.YY.ZZ.83 moved from 40:61:86:cd:44:97 to > 00:17:10:8e:5e:87 on re0 > > 11-CURRENT on r294112, from r406193 src: > nfe0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 > options=82008<VLAN_MTU,WOL_MAGIC,LINKSTATE> > ether 00:24:81:ce:ba:87 > inet XX.YY.ZZ.85 netmask 0xffffff00 broadcast XX.YY.ZZ.255 > inet6 fe80::224:81ff:fece:ba87%nfe0 prefixlen 64 scopeid 0x1 > nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL> > media: Ethernet autoselect (1000baseT <full-duplex>) > status: active > > 9-STABLE: > re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 > options=8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE> > ether 40:61:86:f6:aa:2a > inet XX.YY.ZZ.81 netmask 0xffffff00 broadcast XX.YY.ZZ.255 > inet6 fe80::4261:86ff:fef6:aa2a%re0 prefixlen 64 scopeid 0x1 > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> > media: Ethernet autoselect (1000baseT <full-duplex>) > status: active > > 9-STABLE: > nfe0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 > options=82008<VLAN_MTU,WOL_MAGIC,LINKSTATE> > ether 40:61:86:cd:44:97 > inet XX.YY.ZZ.83 netmask 0xffffff00 broadcast XX.YY.ZZ.255 > inet6 fe80::4261:86ff:fecd:4497%nfe0 prefixlen 64 scopeid 0x3 > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> > media: Ethernet autoselect (100baseTX <full-duplex>) > status: active > > 9-STABLE: > nfe0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 > options=82008<VLAN_MTU,WOL_MAGIC,LINKSTATE> > ether 00:30:67:5e:29:5d > inet XX.YY.ZZ.84 netmask 0xffffff00 broadcast XX.YY.ZZ.255 > inet6 fe80::230:67ff:fe5e:295d%nfe0 prefixlen 64 scopeid 0x3 > nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL> > media: Ethernet autoselect (100baseTX <full-duplex>) > status: active > > Topography: > boxes --> switch --> router --> internet > > Thanks again! > > --Chris >> -- >> Allan Jude > > Your issue looks different. What device is 00:17:10:8e:5e:87 ? It does not appear anywhere in your ifconfig output. It looks like an IP conflict or something. -- Allan Jude [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) iQIcBAEBAgAGBQJWsm1JAAoJEBmVNT4SmAt+2DUQAMWDffUBsZ8qojskCKMHFIKR IeDVTChCIlo/q3tYh+ZkIvkOc6APyzeISm4QO8vDpVSnoh+dJHThUybp7pvCQBff WBW4LpbES613Un/78D6N3acaRhna8u+zYzcFGaBl0bcj5UDF7+oUefQuZ9Z/B8zx gEvZLSFCBC9ztkEfHJl4I3rDUXj3vdjElsTkPac7XfbjDBSB2Ea/6v1FIAlXvgis lclUvzLiLGZDBjc+mOuqEZRlR65OezdHfcPHv5j7wr1Zg1DxdSikLh8gjLqLs0Ch drVDQ6cRnMrZHUIfScHlGBLLdMELL4i73zIV0n7Dj9EtxqcuSgNV+Im+Kz6WlR/v 1r8pB7o2rz9yAeqeWcX2LuehDrsU6y9RBDnjznRXBFFL7A+Lf8xVlVU8lBcdODDj BGGM0n0nF9RUAH1p847oY567gNoMkn6D0ttixaA80fLs/+QPbMljlt7ddYZfItas s1K8W05y1vIaxvIQwdc2F3rRanFAhthF+PSzZMc0hcunjgF2p/OWxeUnPKQ72sQc oELiS+eFUMqrav2bnTM41dR423OcTAxg9VErgJ/NrCjZXWIPqhymQxvzOenjIwn6 6Ir7w66UIwXeoKleUjeLGpJG+x8wzjSYi71/r+aLCfpITkDemnEYcMa0RdnTp/gz SurieuzyFDjb7bcEXMXq =eoKs -----END PGP SIGNATURE-----help
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