Thank you for the info, I will get on changing things over to the new IP address in the next 24 hours.
The problem with using DNS is the firewalls I use only allow rules using an IP address. So in a way, yes, I can not use DNS where the miners are as the firewalls do not use DNS (only IP addresses). 100% understood that if you change stratum.kano.is to point to a new IP address then I will need to update it again.
Thanks again for the info!
Since the firewall you use only works with IP addresses in the rules, maybe allow your miners to 8.8.8.8 and 8.8.4.4 port 53 for DNS? Set your miners DNS to those 2 IP's, then you wouldn't have to worry next time an IP changes. Just throwing out options for you..