From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: Fw: [Bugme-new] [Bug 4430] New: Virtual interfaces cannot have their own mtu Date: Fri, 1 Apr 2005 02:11:21 -0800 Message-ID: <20050401021121.76da449b.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: lukeross@sys3175.co.uk Return-path: To: netdev@oss.sgi.com Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org hm, mtu is implemented in the device driver - you might be out of luck. Begin forwarded message: Date: Fri, 1 Apr 2005 02:01:19 -0800 From: bugme-daemon@osdl.org To: bugme-new@lists.osdl.org Subject: [Bugme-new] [Bug 4430] New: Virtual interfaces cannot have their own mtu http://bugme.osdl.org/show_bug.cgi?id=4430 Summary: Virtual interfaces cannot have their own mtu Kernel Version: kernel-2.6.9-1.6_FC2 Status: NEW Severity: low Owner: acme@conectiva.com.br Submitter: lukeross@sys3175.co.uk Distribution: Fedora Core 2,3 Hardware Environment: Broadcom gigabit card using tg3 (Tyan s2885 onboard) Problem Description: eth0 and eth0:1 cannot have different mtus. I have a jumbo-frame capable switch with three devices plugged in. Two are PCs with jumbo-capable cards, the other is a wireless router which isn't, and hangs if either PC attempts to discover whether it can support jumbo frames. To get the benefit of jumbo frames between the two PCs, I tried to set up eth0:1 - on a different subnet to the wireless router - on both PCs, and set the mtu of the eth0:1 to 9000. However it is not possible to set the mtu for eth0:1 to 9000 without setting the mtu of eth0 to 9000 as well. Also noted in http://xcat.org/pipermail/xcat-user/2003-April/002358.html ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is.