net: Add the BOOTP_DNS2 option to Kconfig

Commit 3b3ea2c56ec4bc5 ("Kconfig: cmd: Make networking command dependent on NET")
removed the help documentation from the README but didn't add it back to Kconfig.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Duncan Hare <dh@synoia.com>

diff --git a/cmd/Kconfig b/cmd/Kconfig
index 666437969f8554688d0a43f1c8964695ec6a0dd3..43efe7d4e942f1b9b2cbbb1f367f8947badc8770 100644 (file)
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -1056,6 +1056,17 @@ config BOOTP_DNS
          returned, you must set BOOTP_DNS2 to store that second server IP
          also.
 
+config BOOTP_DNS2
+       bool "Store 'dnsip2' from BOOTP/DHCP server"
+       depends on BOOTP_DNS
+       help
+         If a DHCP client requests the DNS server IP from a DHCP server,
+         it is possible that more than one DNS serverip is offered to the
+         client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
+         server IP will be stored in the additional environment
+         variable "dnsip2". The first DNS serverip is always
+         stored in the variable "dnsip", when BOOTP_DNS is defined.
+
 config BOOTP_GATEWAY
        bool "Request & store 'gatewayip' from BOOTP/DHCP server"
        depends on CMD_BOOTP