stm32/modnetwork: Fix query of DNS IP address in ifconfig().
stm32/modnetwork: Fix query of DNS IP address in ifconfig().

Thanks to @boochow for the fix.

selste/micropython,henriknelson/micropython,trezor/micropython,pfalcon/micropython,adafruit/circuitpython,kerneltask/micropython,tobbad/micropython,swegener/micropython,pozetroninc/micropython,pramasoul/micropython,kerneltask/micropython,pfalcon/micropython,trezor/micropython,pozetroninc/micropython,swegener/micropython,swegener/micropython,henriknelson/micropython,selste/micropython,adafruit/circuitpython,tobbad/micropython,adafruit/circuitpython,tobbad/micropython,adafruit/circuitpython,pramasoul/micropython,tobbad/micropython,trezor/micropython,MrSurly/micropython,selste/micropython,henriknelson/micropython,pfalcon/micropython,swegener/micropython,tralamazza/micropython,tralamazza/micropython,tobbad/micropython,henriknelson/micropython,kerneltask/micropython,bvernoux/micropython,pramasoul/micropython,henriknelson/micropython,MrSurly/micropython,bvernoux/micropython,bvernoux/micropython,adafruit/circuitpython,pramasoul/micropython,MrSurly/micropython,selste/micropython,swegener/micropython,adafruit/circuitpython,pozetroninc/micropython,tralamazza/micropython,kerneltask/micropython,tralamazza/micropython,selste/micropython,pozetroninc/micropython,pfalcon/micropython,bvernoux/micropython,trezor/micropython,bvernoux/micropython,MrSurly/micropython,trezor/micropython,pfalcon/micropython,pozetroninc/micropython,pramasoul/micropython,kerneltask/micropython,MrSurly/micropython