Date: Wed, 1 Dec 2010 09:15:30 -0500 From: Brian McCann <bjmccann@gmail.com> To: freebsd-questions <freebsd-questions@freebsd.org> Subject: Re: /etc/rc.d/netif & em interfaces Message-ID: <AANLkTiksNZVe1YJ6JZKbdrAx2Rc0hgfPjEAoU3H%2BxQnK@mail.gmail.com> In-Reply-To: <AANLkTikmWDO6u6yz0CBVp9EH7=yLkkisCqMC6=f=XwjH@mail.gmail.com> References: <AANLkTikmWDO6u6yz0CBVp9EH7=yLkkisCqMC6=f=XwjH@mail.gmail.com>
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On Wed, Dec 1, 2010 at 8:42 AM, Brian McCann <bjmccann@gmail.com> wrote: > I'm having an interesting problem on a fresh 8.1-RELEASE1 install. > I'll start by saying this didn't happen on 7.1 on the same exact > machine. =A0I've been fighting with this for 2 days now and have come up > with no answers on my own, so I'm hoping one of you guys can have some > insight here. > > When I run "/etc/rc.d/netif restart" (also happens with a stop / > start) , I can no longer get to the server over the network. =A0When I > do a packet capture on my workstation, it looks like it's MAC address > changed somehow. =A0The first two bytes of the address are different. > For example, the real MAC is 00:15:17:1b:cf:7a , but I'll see the > replies from a MAC of =A0"02:67:17:1b:cf:7a". =A0After each run of > "/etc/rc.d/netif restart", the first two bytes will change again. =A0I > have to reboot the server to get it working again. =A0The "em" cards in > question are: > > dev.em.0.%desc: Intel(R) PRO/1000 Network Connection 7.0.5 > dev.em.0.%pnpinfo: vendor=3D0x8086 device=3D0x108c subvendor=3D0x8086 > subdevice=3D0x348d class=3D0x020000 > dev.em.1.%desc: Intel(R) PRO/1000 Legacy Network Connection 1.0.1 > dev.em.1.%pnpinfo: vendor=3D0x8086 device=3D0x1076 subvendor=3D0x8086 > subdevice=3D0x348d class=3D0x020000 > > FWIW, this is on an Intel 1530 series server. > > Thanks in advance, > --Brian I botched the problem description slightly. In the packet capture on the workstation, the server's MAC is always correct. The response (SYN/ACK packet) from the server is destined to the wrong MAC address. The first two bytes are wrong somehow. The arp table on the server is correct. If I run "arp -ad", the problem remains. I've also produced this problem by doing "ifconfig em1 down" then "ifconfig em1 up". To make this problem even stranger, I can make a connection from the server to a workstation without issue. It appears to only be incoming connections. Thanks again, --Brian --=20 _-=3D-_-=3D-_-=3D-_-=3D-_-=3D-_-=3D-_-=3D-_-=3D-_-=3D-_-=3D-_-=3D-_ Brian McCann "I don't have to take this abuse from you -- I've got hundreds of people waiting to abuse me." =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 -- Bill Murray, "Ghostbusters"
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