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Example usage of --dns option does not work as described

dnslink --help prints (among others) these examples:

# Receive the dnslink entries for the dnslink.io domain.
> dnslink dnslink.dev
/ipfs/QmXNosdfz3WQUHncsYBTw7diwYzCibVhrJmEhNNaMPQBQF

and

# Receive the dnslink entries using the system DNS.
> dnslink --dns dnslink.dev
/ipfs/QmXNosdfz3WQUHncsYBTw7diwYzCibVhrJmEhNNaMPQBQF

This leads me to believe that dnslink does not use the system resolver by default (which I don't like) but specifying --dns does use the system resolver.
But executing the example dnslink --dns dnslink.dev just panics:

panic: invalid argument to Intn

goroutine 1 [running]:
math/rand.(*Rand).Intn(0x18?, 0x666a40?)
	math/rand/rand.go:180 +0x4c
math/rand.Intn(0xc000020258?)
	math/rand/rand.go:453 +0x25
main.main.NewUDPLookup.func1({0xc000020258, 0x14})
	github.com/dnslink-std/go/dnslink.go:244 +0x16c
github.com/dnslink-std/go.resolve(0xc0000e1ab0?, {0x7ffeff05e63f?, 0xb?})
	github.com/dnslink-std/go/dnslink.go:313 +0x156
github.com/dnslink-std/go.(*Resolver).Resolve(...)
	github.com/dnslink-std/go/dnslink.go:86
main.main()
	github.com/dnslink-std/go/dnslink/main.go:298 +0x9fa

Maybe not specifying the --dns option is what actually uses the system resolver and the documentation is just wrong?

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