dhcp: Allow for trailing FCS in the packet.

diff --git a/src/dhcp.c b/src/dhcp.c
index ed0ffa4802bee796dbc1b56fcc614a5edf8af0db..67bf45666ad2c8badd128c8ee34d9ad9b44a7184 100644 (file)
--- a/src/dhcp.c
+++ b/src/dhcp.c
@@ -3282,7 +3282,7 @@ is_packet_udp_bootp(void *packet, size_t plen)
                return false;
 
        /* Sanity. */
-       if (ntohs(ip->ip_len) != plen)
+       if (ntohs(ip->ip_len) > plen)
                return false;
 
        ip_hlen = (size_t)ip->ip_hl * 4;
@@ -3297,7 +3297,7 @@ is_packet_udp_bootp(void *packet, size_t plen)
        udp = (struct udphdr *)(void *)((char *)ip + ip_hlen);
        if (ntohs(udp->uh_ulen) < sizeof(*udp))
                return false;
-       if (ip_hlen + ntohs(udp->uh_ulen) != plen)
+       if (ip_hlen + ntohs(udp->uh_ulen) > plen)
                return false;
 
        /* Check it's to and from the right ports. */