Been having a really weird network problem for the past few months, really really annoying me and can't be the only person having it. We have 3 iOS devices in our house. IPhone 4S, iPhone 5S and an iPad (2 or 3, unsure). Every half hour the entire network slows up and comes to a total crawl (no up or down internet connectivity, ping times on local machines upto 3 seconds). Thought it was the router being a pile of junk (and partially it is) but noticed it didn't happen so severely when mum left the house and if she took her iPad too it stopped entirely. Decided to check router event log. Found a set of events coinciding with the slowdowns. DHCP renewal requests from both the 5S and the iPad. Not once every 24 hours as router is configured for and other devices stick to, half hourly. Not just 1 renewal request. Usually 3 or 4, once counted 12. Half the time they don't even stick to the new IP dhcp issues them. They both seem to be spamming the router for renewal requests, it then can't cope and stops functioning. iOS is DoS'ing my router I can't be the only person with similar events happening? Fix I'm employing is to allocate static IP addresses for both devices rather than using dhcp.