Re: SCTP
I suspect the problem is not so much routers per se but other middleboxes: firewall appliances, load balancers, reverse proxies, the NAT components of SOHO routers, TLS terminators, and so on. Things that want to inspect traffic.
And, yes, not supporting SCTP in those things is regrettable, but it's the usual mutual-dependency problem: Vendors don't support SCTP because few people use it, and few people use it because vendors don't support it.
Biting the hand that feeds IT
