Require at least one domain for gen_dns.
Require at least one domain for gen_dns.

cloudflare/bpftools,mynameiscfed/bpftools,GeoffreyPlouviez/bpftools,nivertech/bpftools,nivertech/bpftools,GeoffreyPlouviez/bpftools,cloudflare/bpftools,mynameiscfed/bpftools