the call of get_interface_gatewayv6() in the creation of a GIF tunnel over IPv6 leads to a "Fatal error: Call to undefined function get_interface_gatewayv6() in /etc/inc/interfaces.inc on line 934". changeing the function call to get_interface_gateway_v6() fixed it for me on my local system.
fixing typo for GIF tunnels to work over IPv6
the call of get_interface_gatewayv6() in the creation of a GIF tunnel over IPv6 leads to a "Fatal error: Call to undefined function get_interface_gatewayv6() in /etc/inc/interfaces.inc on line 934". changeing the function call to get_interface_gateway_v6() fixed it for me on my local system.