Add receive-only mode switch "-r" to usage()

diff --git a/src/lldpd.c b/src/lldpd.c
index 3827a11c97b172a8399287e0bad2432ba5bffbcb..b620b2031bdd6c90ad2846fa6a262552a7646ab0 100644 (file)
--- a/src/lldpd.c
+++ b/src/lldpd.c
@@ -108,6 +108,7 @@ usage(void)
        fprintf(stderr, "\n");
 
        fprintf(stderr, "-d       Do not daemonize.\n");
+       fprintf(stderr, "-r       Receive-only mode\n");
        fprintf(stderr, "-i       Disable LLDP-MED inventory TLV transmission.\n");
        fprintf(stderr, "-k       Disable advertising of kernel release, version, machine.\n");
        fprintf(stderr, "-S descr Override the default system description.\n");