[44net] Re: Waiting for RIPv2 broadcasts

Hi Kun, The RIP broadcasts are sent as encapsulated multicast packets over the tunnel from the UCSD gateway server on 44.0.0.1 to your tunnel endpoint, so you need the tunnel setup before RIP44d can receive these broadcasts. I am assuming you are using some flavour of Linux as your gateway machine, if so as a minimum you would need to: modprobe ipip ip addr add 44.x.x.x dev tunl0 ip link set dev tunl0 up where 44.x.x.x is your tunnel endpoint IP. Then you can run the find_pass.sh script, which is just a one liner: ampr-ripd -d -v -i tunl0 I use Debian 12 and this is how I have my gateway setup, hope it helps... I use systemd to start everything up automatically after a reboot: /etc/systemd/system/amprgw.service [Unit] Description=AMPRNet After=network-online.target Wants=network-online.target [Service] Type=oneshot RemainAfterExit=true ExecStart=/usr/local/bin/ampr_start.sh ExecStop=/usr/local/bin/ampr_stop.sh [Install] WantedBy=multi-user.target After creating this file you need to run “systemctl daemon-reload” followed by “systemctl enable amprgw” and “systemctl start amprgw” Here is the ampr_start.sh script: #!/bin/sh PWD=“<the RIP44d password>" LOCATION="G1FEF@IO91mk" AMPR_OUR_LAN="44.63.7.208/29" AMPR_OUR_TUN="44.63.7.215" EXT_INTERFACE="enp1s0" INT_INTERFACE="enp2s0" TUN_INTERFACE="tunl0" # Enable IP Forwarding sysctl -w net.ipv4.ip_forward=1 # Enable IPIP tunnel and interface modprobe ipip ip addr add $AMPR_OUR_TUN dev $TUN_INTERFACE # Set some tunnel interface options # * Give the tunnel its own TTL of 64 hops enabling traceroute over the tunnel # * Bring up the interface # * Set the tunnel MTU ip tunnel change ttl 64 mode ipip $TUN_INTERFACE ip link set dev $TUN_INTERFACE up ifconfig $TUN_INTERFACE mtu 1480 # Set AMPRNet routing table rules # * Any packets from any AMPRNet space use routing table 44 # * Any packets from my AMPRNet space use routing table 44 ip rule add to 44.0.0.0/9 table 44 priority 44 ip rule add to 44.128.0.0/10 table 44 priority 44 ip rule add from $AMPR_OUR_LAN table 44 priority 45 # Set AMPRNet routes # * Default route out of AMPRNet is 169.228.34.84 # * Set local route for AMPRNet on local AMPRNet interface ip route add default dev $TUN_INTERFACE via 169.228.34.84 onlink table 44 ip route add $AMPR_OUR_LAN dev $INT_INTERFACE table 44 # Rest of the routes are added dynamically by the AMPR-RIPD routing Daemon. /usr/sbin/ampr-ripd -s -r -t 44 -i $TUN_INTERFACE -a $AMPR_OUR_LAN -p $PWD -L $LOCATION and the ampr_stop.sh script #!/bin/bash NET_AMP="44.63.7.208/29" NIC_AMP="enp2s0.44" NIC_TUN="tunl0" ### DISABLE IP FORWARDING ### sysctl -w net.ipv4.ip_forward=0 ### Take the tunnel offline ### ifconfig $NIC_TUN down ### Remove the table 44 routes ### ip route delete default dev $NIC_TUN via 169.228.34.84 onlink table 44 # Deletes local 44 network from Table 44 #ip route delete $NET_AMP dev $NIC_AMP table 44 ### STOPS THE ampr-ripd ROUTER DAMEON killall -KILL ampr-ripd 73, Chris - G1FEF