Bug 751721

Summary:	net-misc/openssh-8.1_p1-r4[sctp]: Transport SCTP directive applies to all hosts
Product:	Gentoo Linux	Reporter:	WGH <wgh>
Component:	Current packages	Assignee:	Patrick McLean <chutzpah>
Status:	UNCONFIRMED ---
Severity:	normal	CC:	sam
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description WGH 2020-10-29 08:54:01 UTC

I don't know where this patch set comes from (if I knew, I reported to its upstream directly).

Reproducible: Always

Steps to Reproduce:
1. Have openssh built with "sctp" USE flag enabled
2. Have "Transport sctp" under any host in ~/.ssh/config
3. Try to connect to any host, not necessarily matched by any "Host" directive
Actual Results:  
"Transport sctp" applies to all hosts, not only the one under which it's written. And if you try to connect to a host without SSH listening on SCTP, you'll get a "connection refused" error.

Expected Results:  
"Transport sctp" would apply only to the host under which it's written (like probably all other ssh_config options do).

Given that this SCTP patch is not very widespread, it makes it even harder to test it, since you can't really use "Transport sctp" (as it would break connection to most other hosts), and passing -z host-by-host is somewhat annoying.