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[dhcp] Accept ProxyDHCP replies of type DHCPOFFER

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The PXE standard provides examples of ProxyDHCP responses being encoded both
as type DHCPOFFER and DHCPACK, but currently we only accept DHCPACKs. Since
there are PXE servers in existence that respond to ProxyDHCPREQUESTs with
DHCPOFFERs, modify gPXE's ProxyDHCP pruning logic to treat both types of
responses equally.

Signed-off-by: Marty Connor <mdc@etherboot.org>
This commit is contained in:
Joshua Oreman 2009-11-03 13:31:12 -05:00 committed by Marty Connor
parent eebe98ea60
commit 04e4a4f695
1 changed files with 1 additions and 1 deletions
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2
src/net/udp/dhcp.c
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@ -627,7 +627,7 @@ static void dhcp_proxy_rx ( struct dhcp_session *dhcp,
/* Filter out unacceptable responses */
if ( peer->sin_port != dhcp->proxy_port )
return;
if ( msgtype != DHCPACK )
if ( ( msgtype != DHCPOFFER ) && ( msgtype != DHCPACK ) )
return;
if ( server_id.s_addr /* Linux PXE server omits server ID */ &&
( server_id.s_addr != dhcp->proxy_server.s_addr ) )