#!/bin/bash -e

# This is a wrapper around the python ynl cli included with the kernel that
# mimics the documented behaviour of the ipxlat-ctl tool available at
# https://codeberg.org/IPv6-Monostack/ipxlat, but which I haven't been able to
# make work. You'll need to ensure the tool is somewhere in $PATH.

PATH=/usr/src/kernels/ipxlat-net-next/tools/net/ynl/pyynl:$PATH

dev="$1"
prefix="$3"

IID=$(< /sys/class/net/$dev/ifindex)
ADDR_HEX=$(python3 -c 'import ipaddress,sys; print(ipaddress.IPv6Address(sys.argv[1]).packed.hex())' ${prefix%/*})
PREFIXLEN=${prefix#*/}
JSON='{"ifindex": '"$IID"', "config": {"xlat-prefix6": { "prefix": "'$ADDR_HEX'", "prefix-len": '$PREFIXLEN'}}}'

cli.py --family ipxlat --do dev-set --json "$JSON"