Since LND V0.5, this Extra is obsolete. lnd now supports the following lnd.conf entry that supports dynamic IPs.
See https://github.com/lightningnetwork/lnd/blob/master/sample-lnd.conf for more info.
If your RaspiBolt is running on an internet connection that does not have a static IP address and your ISP changes your IP address, then your Lightning Network Node (LNN) has effectively disappeared from the Lightning Network (LN).
There is discussion among the lnd developers about adding a new lncli command to update the --externalip parameter without restarting lnd - which locks the wallet. Until that is implemented, the solution presented here is a stop-gap solution.
The basic method is:
- Every 10 minutes:
- Notice that the external IP address has changed
- Restart lnd
If you also want to automatically unlock the wallet, see Auto Lightning Wallet Unlock.
- Login to your RaspiBolt as user admin
- Edit the following script, save and exit
admin ~ ฿ sudo nano /usr/local/bin/getpublicip.sh
#!/bin/bash # RaspiBolt LND Mainnet: script to get public ip address # /usr/local/bin/getpublicip.sh echo 'getpublicip.sh started, writing public IP address every 10 minutes into /run/publicip' while [ 0 ];do source /run/publicip CURRENTIP=$(curl ipinfo.io/ip 2> /run/publicip.log ) echo PUBLICIP=$CURRENTIP > /run/publicip; if [ "$CURRENTIP" != "$PUBLICIP" ];then echo Restarting lnd.service New external IP = $CURRENTIP sudo /bin/systemctl restart lnd.service fi sleep 600 done;
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