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Subject: Re: IP stack question - msg#00156List: linux.networkOn Mon, 24 Jun 2002, Ben Greear wrote: Try that SO_DONTROUTE and see if solves your problem; you probably have to bind the socket to a specific device as well; For all that trouble, i would suggest you may just as well write a sock packet based app. I want to use normal TCP/IP stack as much as possible, so the sock-packet (or raw) would not work for me, although it would work fine for the original poster. I'm also using source-based routing to send out the correct local interface. I'll have to look up more information on what SO_DONTROUTE does, and thanks for the suggestion! Ben -- Ben Greear <greearb@xxxxxxxxxxxxxxx> <Ben_Greear AT excite.com> President of Candela Technologies Inc http://www.candelatech.com ScryMUD: http://scry.wanfear.com http://scry.wanfear.com/~greear Thread at a glance:
Previous Message by Date: click to view message previewRe: IP stack questionOn Mon, 24 Jun 2002, Ben Greear wrote: > It would not defeat the purpose of detecting at least one bad network > link of the two. > Unless i misunderstood: He seems to be trying to do a loopback test from one of his interfaces to the network and back on another of his interfaces. > I wonder if a ping -I eth1 255.255.255.255 would accomplish the > goal as well? > This would probably cause a broadcast storm if you are doing a loopback test ;-> Actually now that i think about it, you could probably modify ping to do setsockopt(fd,....,SO_DONTROUTE,...) and send it out on a specific interface. Dont know if it would work. > I would actually like to be able to force a machine to not do local > routing as well, and force packets out over an interface even if > the destination is a local IP, using source-based-routing, > or something similar. There is no way to do this currently? > Try that SO_DONTROUTE and see if solves your problem; you probably have to bind the socket to a specific device as well; For all that trouble, i would suggest you may just as well write a sock packet based app. cheers, jamal Next Message by Date: click to view message previewsimple networking clenaup questionshi list, i have a some uestions about networking cleanups: 1) is moving the ifmap struct into net_device still on the todo list? (it is according to the comments in the header file) 2) what about getting rid of dev->set_config, and just pass SIOCSIFMAP to the device? thanks, tm -- "They that can give up liberty to obtain a little temporary safety deserve neighter liberty nor safety" - Benjamin Franklin Previous Message by Thread: click to view message previewRe: IP stack questionOn Mon, 24 Jun 2002, Ben Greear wrote: > It would not defeat the purpose of detecting at least one bad network > link of the two. > Unless i misunderstood: He seems to be trying to do a loopback test from one of his interfaces to the network and back on another of his interfaces. > I wonder if a ping -I eth1 255.255.255.255 would accomplish the > goal as well? > This would probably cause a broadcast storm if you are doing a loopback test ;-> Actually now that i think about it, you could probably modify ping to do setsockopt(fd,....,SO_DONTROUTE,...) and send it out on a specific interface. Dont know if it would work. > I would actually like to be able to force a machine to not do local > routing as well, and force packets out over an interface even if > the destination is a local IP, using source-based-routing, > or something similar. There is no way to do this currently? > Try that SO_DONTROUTE and see if solves your problem; you probably have to bind the socket to a specific device as well; For all that trouble, i would suggest you may just as well write a sock packet based app. cheers, jamal Next Message by Thread: click to view message previewsimple networking clenaup questionshi list, i have a some uestions about networking cleanups: 1) is moving the ifmap struct into net_device still on the todo list? (it is according to the comments in the header file) 2) what about getting rid of dev->set_config, and just pass SIOCSIFMAP to the device? thanks, tm -- "They that can give up liberty to obtain a little temporary safety deserve neighter liberty nor safety" - Benjamin Franklin Loading Comments...
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