netifd: fix incorrect number of bytes memset in clear_if_addr

[project/netifd.git] / interface-ip.c

diff --git a/interface-ip.c b/interface-ip.c
index 587826a..8d4434b 100644 (file)
--- a/interface-ip.c
+++ b/interface-ip.c
@@ -75,8 +75,8 @@ clear_if_addr(union if_addr *a, int mask)
        uint8_t m_clear = (1 << (m_bytes * 8 - mask)) - 1;
        uint8_t *p = (uint8_t *) a;
 
        uint8_t m_clear = (1 << (m_bytes * 8 - mask)) - 1;
        uint8_t *p = (uint8_t *) a;
 

-       if (m_bytes < sizeof(a))
-               memset(p + m_bytes, 0, sizeof(a) - m_bytes);
+       if (m_bytes < sizeof(*a))
+               memset(p + m_bytes, 0, sizeof(*a) - m_bytes);

 
        p[m_bytes - 1] &= ~m_clear;
 }
 
        p[m_bytes - 1] &= ~m_clear;
 }