#!/bin/bash
set -e
RULESET="table ip filter {
map client_to_any {
type ipv4_addr : verdict
elements = { 1.2.3.4 : goto CIn_1 }
}
chain FORWARD {
type filter hook forward priority filter; policy accept;
goto client_to_any
}
chain client_to_any {
ip saddr vmap @client_to_any
}
chain CIn_1 {
}
}"
$NFT -f - <<< "$RULESET"
if [ $? -ne 0 ] ; then
echo "E: unable to load good ruleset" >&2
exit 1
fi
GET="$($NFT list ruleset)"
if [ "$RULESET" != "$GET" ] ; then
DIFF="$(which diff)"
[ -x $DIFF ] && $DIFF -u <(echo "$RULESET") <(echo "$GET")
exit 1
fi
RULESET="delete element ip filter client_to_any { 1.2.3.4 : goto CIn_1 }
delete chain ip filter CIn_1"
$NFT -f - <<< "$RULESET"
if [ $? -ne 0 ] ; then
echo "E: unable to load good ruleset" >&2
exit 1
fi