Fix typo in tunnel code (o_key vs. i_key).

If a dotted quad ikey is specified for GRE tunnels, it gets set as the
okey instead.  This patch fixes it. (http://bugs.debian.org/200714)
Signed-off-by: Andreas Henriksson <andreas@fatal.se>
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>

ip/iptunnel.c

@@ -113,7 +113,7 @@ static int parse_args(int argc, char **argv, int cmd, struct ip_tunnel_parm *p)
 			NEXT_ARG();
 			p->i_flags |= GRE_KEY;
 			if (strchr(*argv, '.'))
-				p->o_key = get_addr32(*argv);
+				p->i_key = get_addr32(*argv);
 			else {
 				if (get_unsigned(&uval, *argv, 0)<0) {
 					fprintf(stderr, "invalid value of \"ikey\"\n");