Merge r309649, r313048, r313083, r313104:

tcpdump 4.9.0

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFV r276761: tcpdump 4.6.2.

MFC after: 1 month

Merge tcpdump-4.1.1.

Merge tcpdump 4.0.0 from the vendor branch.

Resolve merge conflicts

Approved by: re (kensmith)
Obtained from: tcpdump.org

resolve merge conflicts

MFC after: 1 month

resolve merge conflicts and update for proper build; including:

o print-fr.c returned to code on vendor branch
o remove pmap_prot.h include from print-sunrprc.c
o remove gcc/i386-specific ntoh* write-arounds from tcpdump-stdinc.h

Reviewed by: bms

Merge of tcpdump 3.8.3 from tcpdump.org, with the following caveats:

print-atm.c no longer performs special handling for FORE headers; these
can no doubt be re-added at a later date.

print-fr.c is effectively a no-op.

print-llc.c has had the default_print_unaligned() call removed as
tcpdump no longer defines this function, however the prototype is still
present. Suggest we roll in a diff to use print_unknown_data().

Merge tcpdump 3.7.1

MFC after: 2 weeks

Merge tcpdump 3.6.2

Merge tcpdump 3.5

Add source routing support.

World, I'd like you to meet the first FreeBSD token Ring driver.
This is for various Olicom cards. An IBM driver is following.
This patch also adds support to tcpdump to decode packets on tokenring.
Congratulations to the proud father.. (below)

Submitted by: Larry Lile <lile@stdio.com>