if_tun: Update tun.4 man page to match the code
authorAaron LI <aly@aaronly.me>
Tue, 17 Jul 2018 11:04:12 +0000 (19:04 +0800)
committerAaron LI <aly@aaronly.me>
Thu, 19 Jul 2018 07:09:47 +0000 (15:09 +0800)
commitb24712baecd0d6a60456e438a12293241e320636
tree4539ca21ffa541dbe24a7372e5c6996b3dcbea63
parent0db5ecf136b9c767d1b577710a0fb9bcc838b2f3
if_tun: Update tun.4 man page to match the code

Mainly follow FreeBSD's tun.4, refer to NetBSD's tun.4, and with my own
minor adjustments.
share/man/man4/tun.4