I had an onsite interview at Ciena a couple of weeks ago for a Senior Systems Test position. Long story short — I didn't get the job. I think they were looking for a person with more experience automating the user experience of routers, whereas most of my experience was automating router operations.
Anyway, one good thing came of this. As I was going through my interview "debriefing" — making notes about what I was asked, how I answered it, and things I could have done better, I found a mistake in the BGP-4 RFC. I submitted an errata report for it, which will hopefully be helpful to people who use it.