Deploy DNS Seeder for LND

[h4x3rotab]

DNS Seeder

https://github.com/BTCGPU/lseed.git

Instructions

1. Run a LND instance with macaroons enabled. See also: Technical Preview 2 #2
2. Download and install lseed

git clone https://github.com/BTCGPU/lseed.git $GOPATH/src/github.com/cdecker/lseed
cd $GOPATH/src/github.com/cdecker/lseed
glide install
go install

3. Run lseed in LND mode with BTG root domain and listen to udp:10053 (optional)

lseed -debug -listen 0.0.0.0:10053 -root-domain lseed.testnet.bitcoingold.org

Deploy as DNS Seeder

LND registers a DNS Seeder by two domains: the root domain of the seeder, and the hostname of the name server. For example, the configuration of BTG lightning network testnet is:

• lseed.testnet.bitcoingold.org: Root domain hosted by our lseed name server.
• soa.testnet.bitcoingold.org: A/AAAA record pointing to our name server.

The name server must accept tcp dns queries in case the routers may drop long dns query result. However dns over tcp is not supported by lseed. We suggest to run lseed as a internal service and point a dns server like BIND to lseed as its upstream name server.

LND related Command flags

(TBD: check lseed --help and lncli --help)

Test

dig lseed.test.bitcoingold.org @127.0.0.1 -p 10053

[h4x3rotab]

Really weird. On some machine I got errors when running glide install:

[ERROR]	Error scanning google.golang.org/grpc/internal/backoff: cannot find package "." in:
	/root/.glide/cache/src/https-google.golang.org-grpc/internal/backoff

However after that I successfully build lseed by:

go get
go install