ipaddrlabel: use uint32_t instead of int32_t

As both linux kernel and function ipaddrlabel_modify use unsigned int for
label. We should also use unsigned int value when print addrlabel in case of
misunderstanding.

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
ss: avoid passing negative numbers to malloc

Example:

$ ss state established \( sport = :4060  or sport = :4061 or sport = :4062  or sport = :4063 or sport = :4064  or sport = :4065 or sport = :4066  or sport = :4067 \)  > /dev/null
Aborted

In the example above ssfilter_bytecompile(...) will return (int)136.
char l1 = 136; means -120 which will result in a negative number
being passed to malloc at misc/ss.c:913.

Simply declare l1 and l2 as integers to avoid the char overflow.

This is one of the issues originally reported in http://bugs.debian.org/511720

Fix the same problem in other code paths as well (thanks to Eric Dumazet).

Reported-by: Andreas Schuldei <andreas@debian.org>
Signed-off-by: Andreas Henriksson <andreas@fatal.se>
Reviewed-by: Eric Dumazet <edumazet@google.com>
ip: make -resolve addr to print names rather than addresses

As a system admin I occasionally want to be able to check that all
interfaces has a name in DNS or /etc/hosts file.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>