WAN DHCP Problem
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I have this EXACT same issue. It only affects DHCP on the WAN. My static interfaces are not affected. Only a reboot will correct it.
I too found the manual duplex work around, and that does seem to work. However, here is the problem..
So, you force pfsense to a manual duplex setting. You better hope you can do the same on the cable modem, or you WILL have a duplex mismatch. In my case, I cannot manually set the duplex on my cable modem. Since the cable modem only supports auto negotiation on its interface, the instant you manually set your duplex in pfsense the cable modem's NIC will default to half duplex. So, you have 100 full duplex set in pfsense, and the cable modem will be running at 100 half duplex. This is by design.
I'm left with two options here.. a duplex mismatch or force everything to 100 half duplex. This isn't a great work around.
Now, what I said works a little different with gig links (I'm limited to 10/100), but the bottom line is that you should always set auto or manual duplex on both ends. You should never set auto on one end, and manual on the other.
I'd love to know what is causing this so I don't have to fool with manually adjusting my duplex settings.
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The link state is reported by the driver to the OS in order to trigger the DHCP client etc. Bringing the interface up and down is more than that. You can test it easily enough if it starts flapping again:
ifconfig sk1 down ifconfig sk1 upSteve
I tried this the last time the problem occurred, and it made no difference. I'd down the interface, but something kept automatically bringing it back up - and the link state kept flapping.
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It's a NIC driver issue that's outside of our control, may want to try a 2.1 snapshot since it has a newer base OS where that may not be an issue. See the 2.1 board heree.
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Thanks for the info. I've been searching for problems related to the VR4 driver which supports the VT6105M NIC on 8.1, but I'm coming up empty. Can you share where you found that? I'm curious as to the exact issue, and in what release it's fixed.
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An earlier post reported this problem on sk interfaces. Are you seeing a similar problem on vr interfaces?
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I have the same issue with my Cable Modem and em interface when I do mac address cloning. Interface flaps up and down sometimes. I don't know what triggers it. Now that I have selected 100BT Half Duplex, it seems to be working good. I don't think it is as simple as driver issues in FreeBSD.
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Did you ever try JimP's suggestion, here?
Steve
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An earlier post reported this problem on sk interfaces. Are you seeing a similar problem on vr interfaces?
Can you reference the post, and I'll take a look?
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Did you ever try JimP's suggestion, here?
Steve
Yes, I did make those changes to my inc files but no help. Still some up and down flapping loop.
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@yaw:
An earlier post reported this problem on sk interfaces. Are you seeing a similar problem on vr interfaces?
Can you reference the post, and I'll take a look?
See replies 3, 9 and 11 of this topic. I'm curious if this is a problem of a particular class of NIC or a more generic DHCP problem.
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I have the same issue with my Cable Modem and em interface when I do mac address cloning. Interface flaps up and down sometimes.
Pre-2.0.1 would flap repeatedly when MAC spoofing in some circumstances, upgrade to 2.0.1 to fix that.
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@yaw:
An earlier post reported this problem on sk interfaces. Are you seeing a similar problem on vr interfaces?
Can you reference the post, and I'll take a look?
See replies 3, 9 and 11 of this topic. I'm curious if this is a problem of a particular class of NIC or a more generic DHCP problem.
Sorry.. I thought you were talking about another thread. Yes, this is the same issue except with the vr interfaces. It only happens with DHCP, and I can replicate it every time.
