[git commit] udhcpc: dns labels can actually start with a number
Denys Vlasenko
vda.linux at googlemail.com
Thu Jul 30 01:03:58 UTC 2015
commit: http://git.busybox.net/busybox/commit/?id=c29021e2a594fb29471c8c7e61ab8f45296622ba
branch: http://git.busybox.net/busybox/commit/?id=refs/heads/master
While RFC1035 recommends a label not to start with a number, there is
actually no such limitation in dns. One may buy a domain name like
0x1.net and use it.
This commit remove this check and allow a user to use such domains.
Signed-off-by: Arthur Gautier <baloo at gandi.net>
Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
networking/udhcp/dhcpc.c | 4 ----
1 files changed, 0 insertions(+), 4 deletions(-)
diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c
index 9d3d1a3..811a1a1 100644
--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -156,10 +156,6 @@ static const char *valid_domain_label(const char *label)
for (;;) {
ch = *label;
if ((ch|0x20) < 'a' || (ch|0x20) > 'z') {
- if (pos == 0) {
- /* label must begin with letter */
- return NULL;
- }
if (ch < '0' || ch > '9') {
if (ch == '\0' || ch == '.')
return label;
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