On Mon, Jun 11, 2012 at 09:19:19AM +0200, Joachim Breitner wrote: > please have a look at > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=676323#10 > > Is it correct and desirable that “route” will add a second route with > the same metric without complaining, while “ip route” will not?
The iproute2 behaviour is desired. The kernel allows net-tools/ioctl to inject alot of bogus configurations. You just demonstrated one of them. The entire approach was considered FUBAR and noone is working on adding extra checks that will just break users scripts here. Instead the entire ioctl interface, including net-tools, was deprecated in favor of netlink and iproute2. When you use iproute2 and the netlink interface, the kernel will be more more strict and not allow you to set up configurations that will result in random behaviour. -- Andreas Henriksson
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