Remove extraneous whitespace

Signed-off-by: Ville Skyttä <ville.skytta@iki.fi>

Fix syntax issues and warnings highlighted by `man --warnings=w' from
man-db 2.7.1.
Signed-off-by: Ville Skyttä <ville.skytta@iki.fi>

Signed-off-by: Phil Sutter <phil@nwl.cc>

Since p->name is only IFNAMSIZ bytes, do not copy more than IFNAMSIZ - 1
bytes into it so there remains at least a single null byte in the end.
Signed-off-by: Phil Sutter <phil@nwl.cc>

Signed-off-by: Phil Sutter <phil@nwl.cc>

Instead of parsing an unsigned integer and checking boundaries, simply
parse u8. This and the added ttl alias 'hlim' provide consistency with
ip6tunnel.
Signed-off-by: Phil Sutter <phil@nwl.cc>

Signed-off-by: Phil Sutter <phil@nwl.cc>

Signed-off-by: Phil Sutter <phil@nwl.cc>

This makes output consistent with iptunnel, also supporting reverse DNS
lookup for remote address if requested.
Signed-off-by: Phil Sutter <phil@nwl.cc>

In iptunnel, declare loop variables inside the loop as done in
ip6tunnel.

Fix and simplify goto logic in ip6tunnel:
- Failure to read over header lines would have left fp opened.
- By returning directly upon fopen() failure, fp can be closed
  unconditionally in the end.

Use the same goto logic in iptunnel, as well.
Signed-off-by: Phil Sutter <phil@nwl.cc>

Although the cache is only initialized in do_show(), this way it is at
least consistent with ip6tunnel.
Signed-off-by: Phil Sutter <phil@nwl.cc>

Make ip6tunnel print an error message as well. While there, get rid of
unnecessary line breaking.
Signed-off-by: Phil Sutter <phil@nwl.cc>

Instead of duplicating the same code six times (key, ikey and okey in
iptunnel and ip6tunnel), have a common parsing routine. This has the
added benefit of having the same verbose error message in ip6tunnel as
well as iptunnel.

I'm not sure if parsing an IPv4 address as key makes sense for
ip6tunnel, but the code was there before so this patch at least doesn't
make it worse.
Signed-off-by: Phil Sutter <phil@nwl.cc>

Put whitespace in the beginning of optional parts, not as suffix
anywhere. Also drop double whitespaces in between words.
Signed-off-by: Phil Sutter <phil@nwl.cc>

Use PKG_CONFIG from Config - it works better when cross-compiling.
Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>

Instead of statically complaining about illegal inet address, use
get_family() to get the address family right.

Based on a patch by Hangbin Liu to print "inet6" for AF_INET6 made more
generic by me.
Signed-off-by: Phil Sutter <phil@nwl.cc>

No blank lines at end of file

No blank lines at EOF, or trailing whitespace.

Shouldn't have extra blank lines.

Cc: Thomas Graf <tgraf@suug.ch>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: Jiri Pirko <jiri@resnulli.us>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Werner Almesberger <werner@almesberger.net>
Signed-off-by: Phil Sutter <phil@nwl.cc>

Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: Phil Sutter <phil@nwl.cc>

Cc: Werner Almesberger <werner@almesberger.net>
Signed-off-by: Phil Sutter <phil@nwl.cc>

Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: Phil Sutter <phil@nwl.cc>

Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: Phil Sutter <phil@nwl.cc>

Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Phil Sutter <phil@nwl.cc>

Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Phil Sutter <phil@nwl.cc>

Cc: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Phil Sutter <phil@nwl.cc>

Cc: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Phil Sutter <phil@nwl.cc>

Add missing spaces around operators to increase readability. Aside from
that, make "preference" match a real synonym for "tos" and "dsfield" as
it's effect was identical to them.
Signed-off-by: Phil Sutter <phil@nwl.cc>