Udhcpc

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You may want to customize behavior of default dhcp client (udhcpc from busybox).

The default behavior is drived by the script /usr/share/udhcpc/default.script

It's default configuration may be overwritten by a /etc/udhcpc/udhcpc.conf file.

Authorized key:value pair are available:

key	default value	possible values
NO_GATEWAY	-	<list of iface names>
IF_METRIC	-	<metric value>
IF_PEER_DNS	yes	<anything but yes>
RESOLV_CONF	/etc/resolv.conf	no ; NO ; -
NO_DNS	-	<list of iface names>

You may also add custom scripts /etc/udhcpc/pre-* and /etc/udhcpc/post-* to be run before and after deconfig|renew|bound dhcp events.