diff options
Diffstat (limited to 'extensions/libipt_icmp.c')
| -rw-r--r-- | extensions/libipt_icmp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/extensions/libipt_icmp.c b/extensions/libipt_icmp.c index 9d45c8c..8f22d05 100644 --- a/extensions/libipt_icmp.c +++ b/extensions/libipt_icmp.c @@ -189,11 +189,15 @@ parse(int c, char **argv, int invert, unsigned int *flags, switch (c) { case '1': + if (*flags == 1) + exit_error(PARAMETER_PROBLEM, + "icmp match: only use --icmp-type once!"); check_inverse(optarg, &invert, &optind, 0); parse_icmp(argv[optind-1], &icmpinfo->type, icmpinfo->code); if (invert) icmpinfo->invflags |= IPT_ICMP_INV; + *flags = 1; break; default: |