i have comcast internet and i use a technicolor router in conjuntion with a linksys wndr3400 v3 and had constant disconnects and multiple error codes such as hawk caterpillar cattle etc the link i have provided has the fix for this problem it involves opening all the ports required specifically for xbox live and for destinys xbox servers since applying this fix i havent been disconnected i hope this helps to get the game to function correctly you have to open all the ports described in the article
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I do not have a technicolor modeum from Comcast, and Comcast themselves have run tests on my internet. It is NOT mine. It is Bungie's servers. 4 months, no fix yet. Worthless company. All of my ports are open, and it is 100% ONLY Destiny that boots me from Xbox LIVE. It is a crappy game made by a crappy company. Believe me, I WANT to believe Buggie is still a good company, and that Destiny is a fun game. But after having error codes over 400+ times in the past 4 months, No. They are not. Just NO.