To support the widest variety of modems, allow restoring previous
behaviour of configuring the link throug means of DHCP(v6) exclusively.
Change the default value of "dhcp" and "dhcpv6" UCI options to "auto",
while keeping the default behaviour of "prefer out-of-band configuration",
intact. Setting "dhcp" or "dhcpv6" to boolean 1 will now force using
DHCP and DHCPv6, respectively.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
1108f6cb8b