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fix(lwip): fix dhcp server set main dns issue

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wangtao@espressif.com
2025-08-26 15:09:49 +08:00
committed by BOT
parent fe96a02802
commit 2f37bf982d
1 changed files with 14 additions and 0 deletions
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components/lwip/Kconfig
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@@ -385,6 +385,20 @@ menu "LWIP"
After this number is exceeded, DHCP server removes of the oldest device
from it's address pool, without notification.
config LWIP_DHCPS_ADD_DNS
bool "Always add DNS option in DHCP responses"
default y
depends on LWIP_DHCPS
help
This allows the DNS option to be optional in the DHCP offers,
depending on the server's runtime configuration.
When enabled, the DHCP server will always add the DNS option to DHCP responses.
If a DNS server is not explicitly configured, the server's IP address will be used
as the fallback for the DNS option.
When disabled, the DHCP server will only include the DNS option in responses
if a DNS server has been explicitly configured.
This option will be removed in IDF v6.x
endmenu # DHCPS
menuconfig LWIP_AUTOIP