network-mirrored.service.2.3.11

for2.3.11-network-mirrored.service

[Unit]
Wants=network-pre.target
Before=network-pre.target shutdown.target

[Service]
User=root
ExecStart=/bin/sh -ec '\
  [ -x /usr/bin/wslinfo ] && [ "$(/usr/bin/wslinfo --networking-mode)" = "mirrored" ] || exit 0;\
  echo 1 > /proc/sys/net/ipv4/conf/all/route_localnet;\
  nft add rule ip nat WSLPOSTROUTING "iif \"loopback0\" ip saddr 127.0.0.0/8 ip daddr != 127.0.0.0/8 counter masquerade comment mirrored"\
'
ExecStop=/bin/sh -ec '\
  [ -x /usr/bin/wslinfo ] && [ "$(/usr/bin/wslinfo --networking-mode)" = "mirrored" ] || exit 0;\
  echo 0 > /proc/sys/net/ipv4/conf/all/route_localnet;\
  for chain in "ip nat WSLPOSTROUTING";\
  do\
    handle=$(nft -a list chain $chain | sed -En "s/^.*comment \\"mirrored\\" # handle ([0-9]+)$/\\1/p");\
    for n in $handle; do echo "delete rule $chain handle $n"; done;\
  done|nft -f -\
'
RemainAfterExit=yes
[Install]
WantedBy=multi-user.target

this script is no longer needed.

please use Docker 27.3.0 or later.