diff options
| author | Hans Dedecker <dedeckeh@gmail.com> | 2020-08-09 22:46:54 +0200 |
|---|---|---|
| committer | Hans Dedecker <dedeckeh@gmail.com> | 2020-08-10 21:20:52 +0200 |
| commit | 645ceed0ed706b073edd6a0d5a2eb936208b48c9 (patch) | |
| tree | bcf841c0f4c1075f6e2a2f15c598e9115a728414 | |
| parent | e32e21e8f338045f410293fab928c9166bf8a44e (diff) | |
interface-ip: clear host bits of the device prefix
Clear the host bits of the device prefix in
interface_ip_add_device_prefix as interface_set_prefix_address just ORs
the calculated assignment part which would lead to an invalid IPv6
address if the host bits are not masked out
Suggested-by: Daniel Gröber <dxld@darkboxed.org>
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
| -rw-r--r-- | interface-ip.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/interface-ip.c b/interface-ip.c index 2e46f14..f1ed8d3 100644 --- a/interface-ip.c +++ b/interface-ip.c @@ -1270,6 +1270,8 @@ interface_ip_add_device_prefix(struct interface *iface, struct in6_addr *addr, uint8_t length, time_t valid_until, time_t preferred_until, struct in6_addr *excl_addr, uint8_t excl_length, const char *pclass) { + union if_addr a = { .in6 = *addr }; + if (!pclass) pclass = (iface) ? iface->name : "local"; @@ -1277,8 +1279,10 @@ interface_ip_add_device_prefix(struct interface *iface, struct in6_addr *addr, if (!prefix) return NULL; + clear_if_addr(&a, length); + prefix->length = length; - prefix->addr = *addr; + prefix->addr = a.in6; prefix->preferred_until = preferred_until; prefix->valid_until = valid_until; prefix->iface = iface; |