[Buildroot] [PATCH] busybox: Enable domain search list support in udhcpc

[Peter Korsgaard <peter@korsgaard.com>]

>>>>> "Yann" == Yann E MORIN <yann.morin.1998@free.fr> writes:

 > Alexey, All,
 > On 2019-04-08 14:00 +0300, Alexey Brodkin spake thusly:
 >> This is useful in networks with internal resources as it allows
 >> to use much shorter names.
 >> 
 >> E.g. instead of "server.internal.company.com" it's possible
 >> to use just "server" if DHCP server is configured with:
 ----------------------------> 8-----------------------
 >> option domain-search "internal.company.com";
 ----------------------------> 8-----------------------
 >> 
 >> This improvement consists of 2 parts:
 >> 
 >> 1. Enable handling of RFC3397 so DHCP client is ready for processing
 >> corresponding data from DHCP server.
 >> 
 >> 2. Some DHCP servers always send out search list if it is set in server's
 >> configuration and some servers only provide search list if client
 >> asks for that (sending list of options it expectes to get).
 >> 
 >> And exactly for those stubborn DHCP servers we need to add "-O search"
 >> to udhcp's command line via CONFIG_IFUPDOWN_UDHCPC_CMD_OPTIONS.
 >> 
 >> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
 >> Cc: Ignacy Gawedzki <ignacy.gawedzki@green-communications.fr>
 >> Cc: Peter Korsgaard <peter@korsgaard.com>

 > Acked-by: Yann E. MORIN <yann.morin.1998@free.fr>

Committed, thanks.

Notice: For a single domain, I believe you can just set

option domain-name "internal.company.com"

In the DHCP server config, which will work out of the box using the
classic (option 15) domain name option.

-- 
Bye, Peter Korsgaard