For a case where you have a wifi STA connection, but no IP address yet, you should see the ‘st’ network interface, but without an IP. In fact, the ‘st’ interface should appear as soon as you start the wifi client. What does ‘wifi status’ show you?
OVMS # wifi mode client STA
Starting WIFI as a client to STA...
I (27218) phy: phy_version: 383.0, 79a622c, Jan 30 2018, 15:38:06, 0, 0
I (27108) wifi: wifi firmware version: ebd3e5d
I (27118) wifi: config NVS flash: enabled
I (27118) wifi: config nano formating: disabled
I (27118) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
I (27128) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
I (27128) wifi: Init dynamic tx buffer num: 16
I (27128) wifi: Init data frame dynamic rx buffer num: 16
I (27138) wifi: Init management frame dynamic rx buffer num: 16
I (27138) wifi: wifi driver task: 3ffe5f94, prio:23, stack:4096
I (27138) wifi: Init static rx buffer num: 4
I (27148) wifi: Init dynamic rx buffer num: 16
I (27148) wifi: wifi power manager task: 0x3ffea128 prio: 21 stack: 2560
I (27218) wifi: mode : sta (re:da:ct:ed:da:ta)
OVMS # network
Interface#1: st1 (ifup=0 linkup=1)
IPv4: 0.0.0.0/0.0.0.0 gateway 0.0.0.0
Interface#0: lo0 (ifup=1 linkup=1)
IPv4: 127.0.0.1/255.0.0.0 gateway 127.0.0.1
DNS: None
Default Interface: None
I (30268) wifi: n:11 0, o:1 0, ap:255 255, sta:11 0, prof:1
I (30938) wifi: state: init -> auth (b0)
I (30948) wifi: state: auth -> assoc (0)
I (30958) wifi: state: assoc -> run (10)
I (30978) wifi: connected with STA, channel 11
OVMS # network
Interface#1: st1 (ifup=1 linkup=1)
IPv4: 0.0.0.0/0.0.0.0 gateway 0.0.0.0
Interface#0: lo0 (ifup=1 linkup=1)
IPv4: 127.0.0.1/255.0.0.0 gateway 127.0.0.1
DNS: None
Default Interface: st1 (0.0.0.0/0.0.0.0 gateway 0.0.0.0)
I (33968) wifi: pm start, type:0
I (34288) event: sta ip: x.x.x.56, mask: 255.255.255.0, gw: x.x.x.62
I (34288) netmanager: Set DNS#0 8.8.8.8
I (34298) netmanager: Set DNS#1 8.8.4.4
I (34298) netmanager: Interface priority is st1 (x.x.x.56/255.255.255.0 gateway x.x.x.62)
I (34308) time: Starting SNTP client
I (34318) ovms-mdns: Starting MDNS service
I (34318) esp32wifi: WiFi UP with SSID: STUBBY, MAC: re:da:ct:ed:da:ta, IP: x.x.x.56, mask: 255.255.255.0, gw: x.x.x.62
I (34348) webserver: Launching Web Server
I (34358) ssh: Launching SSH Server
OVMS # network
Interface#1: st1 (ifup=1 linkup=1)
IPv4: x.x.x.56/255.255.255.0 gateway x.x.x.62
Interface#0: lo0 (ifup=1 linkup=1)
IPv4: 127.0.0.1/255.0.0.0 gateway 127.0.0.1
DNS: 8.8.8.8 8.8.4.4
Default Interface: st1 (x.x.x.56/255.255.255.0 gateway x.x.x.62)
D (40248) time: ntp (stratum 1 trusted 1) provides time Mon Mar 19 01:03:25 2018 (535294us) UTC
OVMS # wifi status
WiFi
Power: on
Mode: Client mode
STA SSID: STUBBY
MAC: re:da:ct:ed:da:ta
IP: x.x.x.56/255.255.255.0
GW: x.x.x.62