Changes to Default Behavior in GlobalProtect App 6.3.3-h12 (6.3.3-c1046) Windows and
Mac
When the endpoint's physical network interface is IPv4-only, GlobalProtect
automatically suppresses both IPv6 route installation and IPv6 virtual adapter
address assignment, even if the gateway provides an IPv6 address in addition to an
IPv4 address.
To force IPv6 virtual adapter provisioning, set the
split-tunnel-keep-tunnel-ipv6 key to yes under
GlobalProtect > Settings in the plist at
/Library/Preferences/com.paloaltonetworks.GlobalProtect.settings.plist,
then reboot the endpoint for the change to take effect.