ipneigh: List all nud states in help output
To not make the output overly confusing, list them in a definition of
the STATE placeholder which is already used in the show/flush syntax but
wasn't explained before.
Signed-off-by: Phil Sutter <phil@nwl.cc>
diff --git a/ip/ipneigh.c b/ip/ipneigh.c
index 9b1499b..48cca19 100644
--- a/ip/ipneigh.c
+++ b/ip/ipneigh.c
@@ -46,10 +46,11 @@
static void usage(void)
{
- fprintf(stderr, "Usage: ip neigh { add | del | change | replace } { ADDR [ lladdr LLADDR ]\n"
- " [ nud { permanent | noarp | stale | reachable } ]\n"
- " | proxy ADDR } [ dev DEV ]\n");
- fprintf(stderr, " ip neigh { show | flush } [ proxy ] [ to PREFIX ] [ dev DEV ] [ nud STATE ]\n");
+ fprintf(stderr, "Usage: ip neigh { add | del | change | replace }\n"
+ " { ADDR [ lladdr LLADDR ] [ nud STATE ] | proxy ADDR } [ dev DEV ]\n");
+ fprintf(stderr, " ip neigh { show | flush } [ proxy ] [ to PREFIX ] [ dev DEV ] [ nud STATE ]\n\n");
+ fprintf(stderr, "STATE := { permanent | noarp | stale | reachable | none |\n"
+ " incomplete | delay | probe | failed }\n");
exit(-1);
}