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Date: Tue, 14 Jun 2016 17:58:02 +0000 From: <Mario_Limonciello@...l.com> To: <andrew@...n.ch> CC: <pali.rohar@...il.com>, <gregkh@...uxfoundation.org>, <davem@...emloft.net>, <hayeswang@...ltek.com>, <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>, <linux-usb@...r.kernel.org>, <anthony.wong@...onical.com> Subject: RE: [PATCH v6] r8152: Add support for setting pass through MAC address on RTL8153-AD > -----Original Message----- > From: Andrew Lunn [mailto:andrew@...n.ch] > Sent: Tuesday, June 14, 2016 12:23 PM > To: Limonciello, Mario <Mario_Limonciello@...l.com> > Cc: pali.rohar@...il.com; gregkh@...uxfoundation.org; > davem@...emloft.net; hayeswang@...ltek.com; linux- > kernel@...r.kernel.org; netdev@...r.kernel.org; linux- > usb@...r.kernel.org; anthony.wong@...onical.com > Subject: Re: [PATCH v6] r8152: Add support for setting pass through MAC > address on RTL8153-AD > > > > It is same, how to handle two network cards which tell us, that they > > > have same MAC addresses. > > > > > > > The kernel handles this just fine. In doing this patch I checked to see > > what it does in that scenario. Two devices are made. systemd doesn't > > rename the second device via the MAC name (eg enxAABBCCDDEEFF). > > What does you dhcp server do? Does it gives out the same IP address? > You then have two interfaces on the same network, with the same MAC > address and IP address. Then what happens? > > Andrew I didn't test it on the same network, I used two separate networks. I expect that the DHCP server would be awfully confused and you'd run down an interesting problem path if it got the same MAC twice.
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