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fix(lwip): fix dhcp server set main dns issue
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@@ -417,6 +417,20 @@ menu "LWIP"
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Enabling this option allows DHCP server to support temporary static ARP entries
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for DHCP Client. This will help the DHCP server to send the DHCP OFFER and DHCP ACK using IP unicast.
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config LWIP_DHCPS_ADD_DNS
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bool "Always add DNS option in DHCP responses"
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default y
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depends on LWIP_DHCPS
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help
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This allows the DNS option to be optional in the DHCP offers,
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depending on the server's runtime configuration.
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When enabled, the DHCP server will always add the DNS option to DHCP responses.
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If a DNS server is not explicitly configured, the server's IP address will be used
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as the fallback for the DNS option.
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When disabled, the DHCP server will only include the DNS option in responses
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if a DNS server has been explicitly configured.
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This option will be removed in IDF v6.x
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endmenu # DHCPS
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menuconfig LWIP_AUTOIP
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