If a PC has manually assigned DNS on its wired or wireless NIC, would that override the DNS servers assigned by the ASA?Īccess-list DNS_FIX standard permit host 169.254.1.1 If I launch scutil from the command line and look at the list of services and their DNS settings I can identify the one used by GlobalProtect.I'm still trying to get access to one of the PCs that is exhibiting the behavior but will definitely check that. I’d have to do this each time I reconnect to VPN, but that can’t be helped I guess. So ping is probably fine but nslookup and dig are definitely a no-no.Īnyways, in my case I finally decided to do remove the DNS entries provided by VPN altogether and replace it with my home router DNS. To see what your DHCP server told your Mac to use, look at the domain_name_server line in the output of: ipconfig getpacket en0
Traditional Unix command-line tools that aren’t specific to DNS, such as ping(8), probably call the traditional gethostbyname(3) APIs, which, on macOS, make use of the system’s DNS resolver behaviors. If you don’t specify which DNS server for them to use, they will probably just use one of the ones listed in /etc/nf, which is auto-generated and only contains the default DNS servers for unscoped queries. To query DNS the way macOS does, use: dns-sd -G v4v6 or dns-sd -q ĭNS-troubleshooting tools such as nslookup(1), dig(1), and host(1) contain their own DNS resolver code and don’t make use of the system’s DNS query APIs, so they don’t get the system behavior. To see all the DNS servers macOS is using, and how the query scoping is set up, use: scutil -dns MacOS has a sophisticated system for DNS request routing (“scoped queries”) in order to handle cases like VPN, where you might want requests for your work’s domain name to go down your VPN tunnel so that you get answers from your work’s internal DNS servers, which may have more/different information than your work’s external DNS servers. From this StackOverflow article which I’d like to copy paste here:
As an aside, don’t use tools like ping or nslookup to find how your DNS resolution is working.
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