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[IPv4] Fix multicast address checking

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From: Viswanath Krishnamurthy <viswa.krish@gmail.com>

The current ipv4 incorrectly checks the IP address for multicast address.
This causes valid IPv4 unicast address to be trated as multicast address

For e.g if the PXE/tftp server IP address is 192.168.4.XXX where XXX is
224 or greater, it gets treated as multicast address and a ethernet
multicast address is sent out on the wire causing timeouts
This commit is contained in:
Michael Brown 2008-05-19 16:19:46 +01:00
parent 00ed567069
commit 1dcc60e5ad
1 changed files with 1 additions and 1 deletions
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2
src/net/ipv4.c
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@ -273,7 +273,7 @@ static int ipv4_ll_addr ( struct in_addr dest, struct in_addr src,
memcpy ( ll_dest, ll_protocol->ll_broadcast,
ll_protocol->ll_addr_len );
return 0;
} else if ( IN_MULTICAST ( dest.s_addr ) ) {
} else if ( IN_MULTICAST ( ntohl ( dest.s_addr ) ) ) {
/* Special case: IPv4 multicast over Ethernet. This
* code may need to be generalised once we find out
* what happens for other link layers.