Date: Wed, 10 Dec 2014 09:29:55 -0800 From: "David P. Discher" <dpd@dpdtech.com> To: FreeBSD Net <freebsd-net@freebsd.org> Subject: EM(4) - Link flap when bridged and adding members (em bridge flap) Message-ID: <BF885CAD-6A3A-4B79-B3E3-52BDF2C1497D@dpdtech.com>
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I=92m seeing this in -head as well as 10-stable (r274577) on two =
different sets of hardware.=20
When an em interface is a member of a bridge, (if_bridge(4)), the link =
flaps. This is reported on the console as well as can be seen with loss =
of connectivity. This seems to be easily replicated. =20
ifconfig bridge0 create
ifconfig bridge addm em0
ifconfig epair0 create
ifconfig bridge addm epair0a=20
< link flap >
Two different systems, the behavior is the same.
em0@pci0:6:0:0: class=3D0x020000 card=3D0x109615d9 chip=3D0x10968086 =
rev=3D0x01 hdr=3D0x00
vendor =3D 'Intel Corporation'
device =3D '80003ES2LAN Gigabit Ethernet Controller (Copper)'
class =3D network
subclass =3D ethernet
em0@pci0:1:0:0: class=3D0x020000 card=3D0x10d315d9 chip=3D0x10d38086 =
rev=3D0x00 hdr=3D0x00
vendor =3D 'Intel Corporation'
device =3D '82574L Gigabit Network Connection'
class =3D network
subclass =3D ethernet
-
David P. Discher
http://davidpdischer.com/
AIM: DavidDPD | Y!M: daviddpdz=20
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