multiple default routes mess up installation

In case multiple default routes on different network interfaces are defined, installation is messed up

exiting awk script after first hit should resolve this issue

homeassistant-supervised/DEBIAN/postinst

@@ -42,7 +42,7 @@ while ! ping -c 1 -W 1 ${URL_VERSION_HOST}; do
 done
 
 # Get primary network interface
-PRIMARY_INTERFACE=$(ip route | awk '/^default/ { print $5 }')
+PRIMARY_INTERFACE=$(ip route | awk '/^default/ { print $5; exit }')
 IP_ADDRESS=$(ip -4 addr show dev "${PRIMARY_INTERFACE}" | awk '/inet / { sub("/.*", "", $2); print $2 }')
 
 case ${ARCH} in
@@ -152,4 +152,4 @@ info "machine: http://${IP_ADDRESS}:8123"
 if [ -f /var/run/reboot-required ]
 then
     warn "A reboot is required to apply changes to grub."
-fi
+fi