Created attachment 177045 [details] sysctl net.inet.tcp.keepinit Please add more helpful description for sysctl net.inet.tcp.keepinit. Patch attached. Thanks.
IMO, it is named "time to establish connection" because if we don't hear back within that time period when in state < TCPS_ESTABLISHED, we drop the connection. JFYI and you may already know that. Regarding the proposed patch, I have no opinion. Thanks for your submission.
The man page for tcp(4) has a nice, succinct description of this sysctl setting. Unless anyone has a strong opinion about this, I close this bug.