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-rw-r--r--extensions/libipt_MARK.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/extensions/libipt_MARK.c b/extensions/libipt_MARK.c
index 93570d67..9774d459 100644
--- a/extensions/libipt_MARK.c
+++ b/extensions/libipt_MARK.c
@@ -48,8 +48,7 @@ parse(int c, char **argv, int invert, unsigned int *flags,
switch (c) {
char *end;
case '1':
- markinfo->mark = strtoul(optarg, &end, 0);
- if (*end != '\0' || end == optarg)
+ if (string_to_number(optarg, 0, 0xfffff, &markinfo->mark))
exit_error(PARAMETER_PROBLEM, "Bad MARK value `%s'", optarg);
if (*flags)
exit_error(PARAMETER_PROBLEM,