Long time I had the same opinion, however, if someone operates a network with multiple upstream providers the operator should be able to afford a proper out of band console access which solves this issue completely. I would only accept a default route on Uplinks where I am only receiving a partial table for rescue purpose. Blake Hudson:

I often opt to leave one or more default routes configured with low priority (lower than BGP). The thinking is that if there is a fault with BGP, the router will still operate and the fault can be corrected remotely (in-band). The downside is that I might pass traffic for non-existing destinations an additional hop and put the load of generating an ICMP unreachable on someone else's router.

--Blake

Berry Mobley wrote on 11/4/2014 11:47 AM:

...

I'm wondering how many of you who are multihomed also add default routes pointing to your providers from whom you are receiving full feeds.

If so, why? If not, why not?

Thanks,

Berry