On Sep 27, 2013, at 6:51 AM, Simon Kelley wrote:
>
> There's one change which needs to be made to the script. When dnsmasq is
> restarted, it won't know the MAC addresses for DHCPv6 (because they're not in
> the leasefile). So at start-up it will execute "old" script runs on each
> lease without the DNSMASQ_MAC environment variable set. The script needs to
> detect when called with "old" and no DNSMASQ_MAC and not delete the relevant
> line from its file.
Hi Simon,
Does this do what you want ?
=============================
#!/bin/bash
action="$1"
mac="$2" # IPv4
ip="$3"
STATUS_FILE="/tmp/dnsmasq-ip-mac.status"
if [ -n "$DNSMASQ_IAID" ]; then
mac="$DNSMASQ_MAC" # IPv6
fi
if [ "$action" = "add" -o "$action" = "old" -o "$action" = "del" ]; then
if [ -n "$ip" ]; then
if [ -n "$mac" -o "$action" = "del" ]; then
if [ -f "$STATUS_FILE" ]; then
sed -i "/^${ip//./\.} / d" "$STATUS_FILE"
fi
if [ "$action" = "add" -o "$action" = "old" ]; then
echo "$ip $mac" >> "$STATUS_FILE"
fi
fi
fi
fi
=============================
Lonnie
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