Цикл входа в систему XUbuntu LightDM

Решение найдено с использованием этого базового, но работающего.conf скопировано из сюда и отредактировано

# Vars
ext_if="net0"
int_if="vnic0"
webports="{443, 80}"

##  make IP reassembly work
set reassemble yes no-df

## ignore loopback traffic
set skip on lo0

# block everything unless told otherwise
# and send TCP-RST/ICMP unreachable
# for every packet which gets blocked
block return in log all
pass out all

# accept incoming SSH connections
pass in proto tcp to $ext_if port 22

# accept webeservers connections
pass in proto tcp to $ext_if port $webports

# accept icmp
pass in proto icmp all

## allow incoming messages from DHCP
pass in inet proto udp from port 67 to port 68
pass in inet6 proto udp from port 547 to port 546

## packet too big - needed for PMTUD
pass in inet6 proto ipv6-icmp icmp6-type 2

## router advertisement
pass in inet6 proto ipv6-icmp icmp6-type 134

## neighbor solicitation
pass in inet6 proto ipv6-icmp icmp6-type 135

## neighbor advertisement
pass in inet6 proto ipv6-icmp icmp6-type 136

## allow all connections initiated from this system,
## including DHCP requests
pass out