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build/init.common: prevent arp responses on the wrong nic. #239

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build/init.common: prevent arp responses on the wrong nic. #239

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5 changes: 5 additions & 0 deletions build/init.common
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Original file line number Diff line number Diff line change
Expand Up @@ -567,6 +567,11 @@ while true; do
ip link add link ${iface} name ${vlan_iface} type vlan id ${vlan}
iface=${vlan_iface}
fi

# Prevent arp-flux: Do not respond to ARP requests that
# are not for this specific interface
sysctl net.ipv4.conf.$iface.arp_filter=1

case "$config" in
"dhcp")
DHCP_IFACES_COUNT=$(($DHCP_IFACES_COUNT + 1))
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