That's what led me to this issue. I have a number of sites on the cloudflare free plan using their free SSL and all of them stopped being indexed by bing over the last few weeks.
@jgrahamc -- Yes. Your support team referred me to the OP link. I emailed bing asking them to whitelist my sites.
OK. Following up internally on this.
Thanks. I appreciate the help of you and your team.
Did you let us (CloudFlare) know? We'll follow up with Bing and see what's going on.
Right, it comes down to cost. Folks like MaxCDN have a similar division of SNI being included by default but proper SSL requiring a $100/mo addition.