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nixos/dhcpd: make authoritative mode optional 

There are circumstances where running secondary DHCP servers in
non-authoritative mode is advantageous. Retain the previous
authoritative behavior as a default.
This commit is contained in:
Emery Hemingway 2020-07-08 01:45:57 +05:30 committed by ehmry
parent 2b7c0dcdaa
commit a8780387ba
1 changed files with 11 additions and 1 deletions
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12
nixos/modules/services/networking/dhcpd.nix
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@ -11,7 +11,7 @@ let
'' ''
default-lease-time 600; default-lease-time 600;
max-lease-time 7200; max-lease-time 7200;
authoritative; ${optionalString (!cfg.authoritative) "not "}authoritative;
ddns-update-style interim; ddns-update-style interim;
log-facility local1; # see dhcpd.nix log-facility local1; # see dhcpd.nix
@ -176,6 +176,16 @@ let
''; '';
}; };
authoritative = mkOption {
type = types.bool;
default = true;
description = ''
Whether the DHCP server shall send DHCPNAK messages to misconfigured
clients. If this is not done, clients may be unable to get a correct
IP address after changing subnets until their old lease has expired.
'';
};
}; };
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