#dnsync

[paultag]

DNSync MAC Addresses

I've been hacking on a project on and off for my LAN called DNSync. This will take a DNSMasq leases file and sync it to Amazon Route 53. I've added a new feature, which will create A reccords for each MAC address on the LAN. Since DNSync won't touch CNAME records, I use CNAME records (manually) to point to the auto-synced A records for services on my LAN (such as my Projector, etc). Since It's easy for two machines to have the same name, I've decided to add A records for each MAC as well as their client name. They take the fomm of something like ab-cd-ef-ab-cd-ef.by-mac.paultag.house., which is harder to accedentally collide.

[paultag]

DNSync

While setting up my new network at my house, I figured I'd do things right and set up an IPSec VPN (and a few other fancy bits). One thing that became annoying when I wasn't on my LAN was I'd have to fiddle with the DNS Resolver to resolve names of machines on the LAN. Since I hate fiddling with options when I need things to just work, the easiest way out was to make the DNS names actually resolve on the public internet. A day or two later, some Golang glue, and AWS Route 53, and I wrote code that would sit on my dnsmasq.leases, watch inotify for IN_MODIFY signals, and sync the records to AWS Route 53. I pushed it up to my GitHub as DNSync. PRs welcome!