lixonet-ee/tinc/subnet-up.tmpl
2023-04-12 22:46:39 -06:00

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#!/bin/ash
echo "Route up: \$SUBNET weight \$WEIGHT via \$NODE (\$REMOTEADDRESS:\$REMOTEPORT)"
nonMACChars=`echo \$SUBNET | tr -d "[:digit:]" | tr -d [:ABCDEFabcdef]`
macFile="/tmp/tinc_peer_mac_\$NODE"
if [ -z "\$nonMACChars" ]; then
# This subnet is a MAC
echo "\$SUBNET" > \$macFile
else
if echo "\$SUBNET" | grep -q -E ".+/32\$"; then
# This subnet is likely an IP address, add it to the ARP table
if test -f "\$macFile"; then
mac=`cat \$macFile`
address=`echo "\$SUBNET" | cut -d '/' -f 1`
echo "Mapping \$address <=> \$mac in ARP table"
arp -s "\$address" "\$mac"
else
echo "[WARNING] No MAC known for node \$NODE, can't route \$SUBNET. This is only a problem if this is a remote route."
fi
fi
fi