correct sysctl name; from clemens goessnitzer

prefer https links in man pages
ok gnezdo@ miod@ jmc@

fix some cases of spaces before full stops, where none were neccessary;

fix incorrect usage of the .Bx macro;
one case reported by Fabio Scotoni <fabio at esse dot ch>,
the rest found with regress/usr.bin/mandoc/db/dbm_dump

Drop unneeded (void *) casts from getsockopt(2)/setsockopt(2) example code.

ok schwarze@ guenther@ kn@

move what little info netstart(8) contains on multicast to the
multicast(4) page (where the same info is essentially present),
leaving an Xr in SEE ALSO; while there, tweak multicast(4) a little...

Remove PIM support from the multicast stack.

ok mpi@

Replace \*(Lt \*(Le \*(Gt \*(Ge with literal < <= > >= respectively,
except for instances where \*(Le and \*(Ge are clearly understood as
mathematical symbols. Discussed with schwarze@

obvious .Pa fixes; found with mandocdb(8)

more Bx;
From: Jan Stary

Use .Lk for HTTP hyperlinks, not .Pa.
Most of the patch from Arto Jonsson <ajonsson at kapsi dot fi>.
jmc@ agrees in principle that .Lk is the right macro to use.

While here, update a few broken lin

Use .Lk for HTTP hyperlinks, not .Pa.
Most of the patch from Arto Jonsson <ajonsson at kapsi dot fi>.
jmc@ agrees in principle that .Lk is the right macro to use.

While here, update a few broken links,
and add missing markup at a few places.

show more ...

convert to new .Dd format;

mention net.inet.ip6.mforwarding;

Document the recent changes to the multicast routing in the kernel.

from jmc@

ok jmc@

deploy .An -nosplit; ok jmc

tweaks;

Document Protocol Independant Multicast

From Pavlin Radoslavov <pavlin@icir.org>

ok deraadt@ brad@