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Optimize arp broadcasts via dhcp hooks

This commit is contained in:
Markus 2017-04-03 22:36:10 +02:00
parent 2071508f1f
commit 7dc86c4c16
1 changed files with 14 additions and 0 deletions
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14
roles/dhcpd/templates/dhcpd.conf.j2
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@ -28,4 +28,18 @@ subnet {{ batman_ipv4 | ipaddr('network') }} netmask {{ batman_ipv4 | ipaddr('ne
pool {
range {{ dhcpd_first }} {{ dhcpd_last }} ;
}
# use static arp entries to reduce broadcast
on commit {
set clip = binary-to-ascii(10, 8, ".", leased-address);
set clhw = binary-to-ascii(16, 8, ":", substring(hardware, 1, 6));
execute("/sbin/arp", "-s", clip, clhw);
}
on release {
set clip = binary-to-ascii(10, 8, ".", leased-address);
execute("/sbin/arp", "-d", clip);
}
on expiry {
set clip = binary-to-ascii(10, 8, ".", leased-address);
execute("/sbin/arp", "-d", clip);
}
}