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Re: Environment variable for BOOTP next server?
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From: |
Andrei Borzenkov |
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Subject: |
Re: Environment variable for BOOTP next server? |
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Date: |
Mon, 16 Jan 2017 18:43:50 +0300 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 |
16.01.2017 12:50, Steven Shiau пишет:
> Dear all,
> When using dnsmasq with proxy function, i.e., to separate the DHCP
> service with BOOTP service. The GRUB environment variable
> "net_default_server" or "net_<interface>_dhcp_server_name" is about the
> DHCP server.
Reviewing RFC 951 (with clarifications) - it is absolutely unclear what
this variable actually means. RFC only says about possible usage of this
field by client; nothing is ever said about what *server* should set it to.
> Is there any variable reserved for BOOTP next server? I
net_<interface>_next_server is set to the value of siaddr field of BOOTP
reply, which is defined as "next server" by RFC.
> just can not find it in the grub2 manual.
It is present in current GIT.
> The reason I need this is to put that as a kernel parameter, similar to
> what syslinux has "IPAPPEND 1" so that some info about DHCP/BOOTP
> service can be appended to /proc/cmdline.
> Thank you very much.
>
> Steven
>