93420826ab
dhcrelay has the ability to monitor interfaces for requests in a single direction only rather than listening to all interfaces for requests. Doing this allows one to suppress the duplication of having the relay forward requests from the same network that the DHCP server is on. Signed-off-by: Brian J. Murrell <brian@interlinx.bc.ca>
65 lines
1.4 KiB
Bash
65 lines
1.4 KiB
Bash
#!/bin/sh /etc/rc.common
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# Copyright (C) 2012 OpenWrt.org
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START=91
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SERVICE_SIG="KILL"
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SERVICE_PID_FILE="/var/run/dhcrelay4.pid"
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SERVICE_USE_PID=1
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start() {
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. /lib/functions/network.sh
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config_load dhcrelay
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local args=""
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local enabled
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config_get_bool enabled ipv4 enabled 0
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[ "$enabled" -eq 0 ] && return 0
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# listen interfaces
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local interfaces
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local ifname
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config_get interfaces ipv4 interfaces
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for net in $interfaces; do
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if network_get_device ifname "$net"; then
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append args "-i $ifname"
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fi
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done
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config_get interfaces ipv4 upstream_interfaces
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for net in $interfaces; do
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if network_get_device ifname "$net"; then
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append args "-iu $ifname"
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fi
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done
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config_get interfaces ipv4 downstream_interfaces
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for net in $interfaces; do
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if network_get_device ifname "$net"; then
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append args "-id $ifname"
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fi
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done
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# link selection sub-option (RFC3527)
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local link_selection
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config_get link_selection ipv4 link_selection
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if network_get_device ifname "$link_selection"; then
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append args "-U $ifname"
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fi
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# relay mode
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local relay_mode
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config_get relay_mode ipv4 relay_mode
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[ -n "$relay_mode" ] && append args "-m $relay_mode"
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# dhcp server address
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local server
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config_get server ipv4 dhcpserver
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[ -n "$server" ] || return 0
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append args "$server"
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service_start /usr/sbin/dhcrelay -4 -q \
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-pf $SERVICE_PID_FILE $args
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}
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stop() {
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service_stop /usr/sbin/dhcrelay
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}
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