I'm having a weird problem with my network settings that I can't figure out. If I manually change the dns servers in the network control panel, the servers will revert back to my isp's defaults after I restart my mac. The dns servers that I manually input stay active indefinitely no matter what I do, unless I restart. Then after restarting, it's as if the dns servers I inputted were never there. They're completely gone in the network settings and replaced by my isp's defaults again. Any advice? I do use a vpn service (private internet access), but this doesn't seem to have any effect on this issue.