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-rw-r--r--iptables.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/iptables.c b/iptables.c
index 35adc2be..07de8964 100644
--- a/iptables.c
+++ b/iptables.c
@@ -751,7 +751,9 @@ parse_interface(const char *arg, char *vianame, unsigned char *mask)
memset(mask, 0xFF, vialen + 1);
memset(mask + vialen + 1, 0, IFNAMSIZ - vialen - 1);
for (i = 0; vianame[i]; i++) {
- if (!isalnum(vianame[i]) && vianame[i] != '_') {
+ if (!isalnum(vianame[i])
+ && vianame[i] != '_'
+ && vianame[i] != '.') {
printf("Warning: wierd character in interface"
" `%s' (No aliases, :, ! or *).\n",
vianame);