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DHCPClient: Send ServerIdentifier option with DHCPRequest packet

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Some DHCP servers (including Mikrotik ones) will NAK the request if the
ServerIdentifier option is not sent with the DHCPRequest packet.
This commit is contained in:
Thitat Auareesuksakul 2022-04-15 00:48:43 +07:00 • committed by Ali Mohammad Pur
parent fa18c283dc
commit 01a602cb51
Notes: sideshowbarker 2024-07-17 11:44:36 +09:00
1 changed files with 6 additions and 1 deletions
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7
Userland/Services/DHCPClient/DHCPv4Client.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2020, the SerenityOS developers.
* Copyright (c) 2020-2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -361,6 +361,11 @@ void DHCPv4Client::dhcp_request(DHCPv4Transaction& transaction, DHCPv4Packet con
// set packet options
builder.set_message_type(DHCPMessageType::DHCPRequest);
builder.add_option(DHCPOption::RequestedIPAddress, sizeof(IPv4Address), &offer.yiaddr());
auto maybe_dhcp_server_ip = offer.parse_options().get<IPv4Address>(DHCPOption::ServerIdentifier);
if (maybe_dhcp_server_ip.has_value())
builder.add_option(DHCPOption::ServerIdentifier, sizeof(IPv4Address), &maybe_dhcp_server_ip.value());
auto& dhcp_packet = builder.build();
// broadcast the "request" request