[quagga-dev 12058] Re: Quagga reaction to Linux silently dropping routes

Greg Troxel gdt at ir.bbn.com
Fri Feb 20 13:51:01 GMT 2015


"dariusz.grzegorski at transbit.nazwa.pl"
<dariusz.grzegorski at transbit.com.pl> writes:

> I stumbled on a problem that was discussed already several years ago (e.g.
> https://lists.quagga.net/pipermail/quagga-dev/2011-October/008960.html), but
> still seems not to be completely solved. The problem is the Linux kernel in some
> situations silently drops entries from its routing table, and Quagga does not
> notice they are not in FIB. Below is an example with a static default route,
> using Quagga 0.99.23 and Linux 3.10.28. The netmask for a PtP interface may be
> considered wrong, but still Quagga and the kernel are not in sync. Does anyone
> have an idea how it could be best fixed?

Probably it's best fixed by fixing the bug in Linux.  That seems far
easier than writing workarounds.
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