Internet über VPN auf MikroTik hinter Fritzbox

/interface list
add comment=defconf name=WAN
add comment=defconf name=LAN
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip hotspot profile
set [ find default=yes ] html-directory=flash/hotspot
/ip ipsec peer profile
add dh-group=ec2n185,modp2048,modp1024 enc-algorithm=aes-256,aes-192,3des \
    name=Android
/ip ipsec policy group
add name=NewDefault
/ip ipsec proposal
add enc-algorithms=aes-256-cbc,aes-192-cbc,3des name=Android pfs-group=none
/ip pool
add name=default-dhcp ranges=192.168.88.10-192.168.88.254
add name=vpn-dhcp ranges=192.168.1.81-192.168.1.90
/ip dhcp-server
add address-pool=default-dhcp interface=bridge name=defconf
/ip ipsec mode-config
add address-pool=vpn-dhcp name=vpndhcp
/ppp profile
add change-tcp-mss=yes dns-server=192.168.1.1 local-address=192.168.1.243 \
    name=L2TP-VPN remote-address=vpn-dhcp use-encryption=required use-mpls=\
    yes
/interface bridge port
add bridge=bridge comment=defconf interface=ether2
add bridge=bridge comment=defconf interface=ether3
add bridge=bridge comment=defconf interface=ether4
add bridge=bridge comment=defconf interface=ether5
add bridge=bridge comment=defconf interface=sfp1
/ip neighbor discovery-settings
set discover-interface-list=LAN
/interface l2tp-server server
set authentication=mschap2 default-profile=L2TP-VPN enabled=yes ipsec-secret=\
    dummy use-ipsec=required
/interface list member
add comment=defconf interface=bridge list=LAN
add comment=defconf interface=ether1 list=WAN
/ip address
add address=192.168.1.243/24 comment=defconf interface=ether2 network=\
    192.168.1.0
add address=192.168.1.244/24 interface=ether1 network=192.168.1.0
/ip dhcp-client
add comment=defconf dhcp-options=hostname,clientid interface=ether1
/ip dhcp-server network
add address=192.168.1.0/24 comment=defconf gateway=192.168.1.243 netmask=24
/ip dns
set allow-remote-requests=yes servers=192.168.1.1
/ip dns static
add address=192.168.1.243 name=router.lan
/ip firewall filter
add action=accept chain=input comment=\
    "defconf: accept established,related,untracked" connection-state=\  
    established,related,untracked
add action=drop chain=input comment="defconf: drop invalid" connection-state=\  
    invalid disabled=yes
add action=accept chain=input comment="defconf: accept ICMP" protocol=icmp  
add action=drop chain=input comment="defconf: drop all not coming from LAN" \  
    disabled=yes in-interface-list=!LAN
add action=accept chain=forward comment="defconf: accept in ipsec policy" \  
    ipsec-policy=in,ipsec
add action=accept chain=forward comment="defconf: accept out ipsec policy" \  
    ipsec-policy=out,ipsec
add action=fasttrack-connection chain=forward comment="defconf: fasttrack" \  
    connection-state=established,related
add action=accept chain=forward comment=\
    "defconf: accept established,related, untracked" connection-state=\  
    established,related,untracked
add action=drop chain=forward comment="defconf: drop invalid" \  
    connection-state=invalid disabled=yes
add action=drop chain=forward comment=\
    "defconf:  drop all from WAN not DSTNATed" connection-nat-state=!dstnat \  
    connection-state=new disabled=yes in-interface-list=WAN
/ip firewall nat
add action=masquerade chain=srcnat comment="defconf: masquerade" \  
    ipsec-policy=out,none out-interface-list=WAN
/ip ipsec peer
add address=0.0.0.0/0 exchange-mode=main-l2tp generate-policy=port-override \
    mode-config=vpndhcp passive=yes profile=Android secret=dummy
/ip ipsec policy
set 0 disabled=yes
add dst-address=0.0.0.0/0 proposal=Android src-address=0.0.0.0/0 template=yes
/ip route
add distance=1 gateway=192.168.1.1
/ppp secret
add name=dummy password=dummy profile=L2TP-VPN service=l2tp
/system clock
set time-zone-name=Europe/Berlin
/system routerboard settings
set silent-boot=no
/tool mac-server
set allowed-interface-list=LAN
/tool mac-server mac-winbox
set allowed-interface-list=LAN