On 4/1/22 7:37 am, Jeremy Ardley wrote:
On 4/1/22 7:27 am, local10 wrote:The IPV6 address you list for tools.usps.com is wildly different from the one I get. It's a completely different network - though that may be a result of resilience planning.I have no problems accessing the www.usps.com <http://www.usps.com>, it's when I go to tools.usps.com that's when I have the issue:# host usps.com usps.com has address 56.0.134.100 usps.com mail is handled by 10 usps-com.mail.protection.outlook.com. # host tools.usps.com tools.usps.com is an alias for cs1799.wpc.upsiloncdn.net. cs1799.wpc.upsiloncdn.net has address 152.195.33.23cs1799.wpc.upsiloncdn.net has IPv6 address 2606:2800:21f:3e9e:5a:9b8f:bddb:fb7cIf you are running IPV6 it may be informative to block it at the firewall (I don't know of any way to block it in the browser)The scenario I'm exploring is you may have a bad upstream IPv6 DNS server
Turns out there is a way to stop IPv6 in Firefox https://techglimpse.com/disable-enable-ipv6-firefox-chrome-browser/ -- Jeremy
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