Recently our customers have reported that their app doesn't work with per-app packet tunnel on iOS v13.3, but it was working well with the same VPN configuration and same app and vpn client versions on iOS v13.2.2. it is still working fine without per-app packet tunnel configuration or with on-demand packet tunnel configuration of same VPN client.
I saw lots of "Can't assign requested address" for the 127.0.0.1:54187 connections. Is that something change in iOS 13.3 which cause this issue?
default 18:06:11.055989 +0530 com.apple.WebKit.Networking nw_connection_report_state_with_handler_on_nw_queue [C13] reporting state failed error Can't assign requested address
default 18:06:11.179329 +0530 com.apple.WebKit.Networking [C13 D01EF64B-BAF0-4F4F-976A-E258241EB12B 127.0.0.1:54187 tcp, pid: 465, legacy-socket] cancel
default 18:06:11.179400 +0530 com.apple.WebKit.Networking [C13 127.0.0.1:54187 tcp, pid: 465, legacy-socket] cancelled
default 18:06:11.179598 +0530 com.apple.WebKit.Networking 0.000s [C13 737392A6-173C-456A-803E-780DBE59D627 127.0.0.1:54187 socket-flow path=satisfied (Path is satisfied), interface: lo0] path:start
default 18:06:11.179632 +0530 com.apple.WebKit.Networking 0.000s [C13 737392A6-173C-456A-803E-780DBE59D627 127.0.0.1:54187 socket-flow path=satisfied (Path is satisfied), interface: lo0] path:satisfied
default 18:06:11.179672 +0530 com.apple.WebKit.Networking 0.000s [C13 737392A6-173C-456A-803E-780DBE59D627 127.0.0.1:54187 socket-flow path=satisfied (Path is satisfied), interface: lo0] flow:start_connect
default 18:06:11.179709 +0530 com.apple.WebKit.Networking 0.001s [C13 737392A6-173C-456A-803E-780DBE59D627 127.0.0.1:54187 socket-flow path=satisfied (Path is satisfied), interface: lo0] flow:failed_connect Can't assign requested address
(Path is satisfied), interface: lo0] flow:failed_connect Can't assign requested address
default 18:06:11.183745 +0530 com.apple.WebKit.Networking nw_connection_report_state_with_handler_on_nw_queue [C13] reporting state cancelled error Can't assign requested address