iOS VPN auto-connect mobileconfig file generator.
Fill out the form. Hit download. Airdrop or email it to yourself.
Currently supports L2TP & IPSEC.
Thanks to Thomas Witt (@thomas_witt) for inspiration by his Medium article:(https://thomas-witt.com/auto-connect-your-ios-device-to-a-vpn-when-joining-an-unknown-wifi-d1df8100c4ba)