ports/58514: net/zebra based software BGP routers may freeze after a small network disturbance

[Munechika Sumikawa]

> > Thanks for the report.  Did you also report the problem to the authors
> > of zebra and quagga?
> No, I didn't. I've seen reports they implement fixes too rare. :-(

Please try to do that.  This problem is not FreeBSD-specific issue.  I
prefer authorized patches by the authors.

-- Sumikawa