Ping failure while connected to router

[samomatt]

Hey I've tried to get a theory for an issue I'm having with one of my computers but haven't had much luck. Essentially one of my MacBook's continuously loses its connection to the internet, and I have to turn off my computers Wi-Fi off and on again to regain it. When I ping the router the connection is consistent, however it drops its connection to DNS servers. I've attached a screenshot, but essentially the internet and router are working fine for every other device it's just the one MacBook that is dropping. Apple is saying it's a problem beyond the MacBook because it doesn't lose it's connection with the router however I've had my ISP and router manufacturer confirm everything is working fine, further proven by the fact no other devices are experiencing the issue.

 

Is there something the computer could be failing to do in terms of interpreting the data provided by the router or something of that nature? I've also looked online and have found this is an overwhelmingly common issue with MacBooks.

I should also note there is no software/firewall contribution at play here as the issue still occurs after a clean OS reinstall with all firewalls disabled.

 

Thanks in advance,

Sam

[+BudMan MVC]

all your other devices are wireless as well, and using 8.8.8.8 as there dns?

 

Vs pinging do an actual query to your dns.. use dig, drill, nslookup whatever your fav tool is.. I assume your router is running a dns cache - what if you just query that does that work..  Just because you can ping your router IP does not mean its passing traffic or large packets are working.  Ping your wan IP of your router, does that answer?

 

Ping with larger packet size to your lan and your wan of your router.  If you could sniff on the wan of the router I would say do that - but guessing this is some off the shelf thing.  Is it running third party firmware where you might actually be able to do something like a tcpdump on its wan interface?