diff options
Diffstat (limited to 'extensions/libipt_tos.c')
-rw-r--r-- | extensions/libipt_tos.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/extensions/libipt_tos.c b/extensions/libipt_tos.c index 6786911..0d6a1d0 100644 --- a/extensions/libipt_tos.c +++ b/extensions/libipt_tos.c @@ -91,6 +91,11 @@ parse(int c, char **argv, int invert, unsigned int *flags, switch (c) { case '1': + /* Ensure that `--tos' haven't been used yet. */ + if (*flags == 1) + exit_error(PARAMETER_PROBLEM, + "tos match: only use --tos once!"); + check_inverse(optarg, &invert, &optind, 0); parse_tos(argv[optind-1], tosinfo); if (invert) |