ip link: fix display of interface groups
This change adds the interface group to the output of "ip link show".
It also makes "ip link" print _all_ devices if no group filter is specified;
previously, only interfaces of the default group (0) were shown.
Signed-off-by: Stefan Tomanek <stefan.tomanek@wertarbyte.de>
diff --git a/include/rt_names.h b/include/rt_names.h
index 37adbd3..56b649a 100644
--- a/include/rt_names.h
+++ b/include/rt_names.h
@@ -8,6 +8,7 @@
const char *rtnl_rttable_n2a(__u32 id, char *buf, int len);
const char *rtnl_rtrealm_n2a(int id, char *buf, int len);
const char *rtnl_dsfield_n2a(int id, char *buf, int len);
+const char *rtnl_group_n2a(int id, char *buf, int len);
int rtnl_rtprot_a2n(__u32 *id, const char *arg);
int rtnl_rtscope_a2n(__u32 *id, const char *arg);