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udhcpd: optional IP selection based on MAC hash

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function                                             old     new   delta
find_free_or_expired_nip                             153     225     +72

Signed-off-by: Vladislav Grishenko <themiron@mail.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Vladislav Grishenko
2011-02-16 13:31:30 +01:00
committed by Denys Vlasenko
parent 4fdb67cc65
commit 5827167338
2 changed files with 50 additions and 8 deletions
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18
networking/udhcp/Config.src
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@@ -39,7 +39,21 @@ config FEATURE_UDHCPD_WRITE_LEASES_EARLY
If selected, udhcpd will write a new file with leases every
time a new lease has been accepted, thus eliminating the need
to send SIGUSR1 for the initial writing or updating. Any timed
rewriting remains undisturbed
rewriting remains undisturbed.
config FEATURE_UDHCPD_BASE_IP_ON_MAC
bool "Select IP address based on client MAC"
default n
depends on UDHCPD
help
If selected, udhcpd will base its selection of IP address to offer
on the client's hardware address. Otherwise udhcpd uses the next
consecutive free address.
This reduces the frequency of IP address changes for clients
which let their lease expire, and makes consecutive DHCPOFFERS
for the same client to (almost always) contain the same
IP address.
config DHCPD_LEASES_FILE
string "Absolute path to lease file"
@@ -72,7 +86,7 @@ config FEATURE_UDHCPC_ARPING
config FEATURE_UDHCP_PORT
bool "Enable '-P port' option for udhcpd and udhcpc"
default y
default n
depends on UDHCPD || UDHCPC
help
At the cost of ~300 bytes, enables -P port option.