After iptables support nft backend, it will emit the following warning if there are rules in the legacy iptables. "# Warning: iptables-legacy tables present, use iptables-legacy to see them". This cause the header skipping to fail in the following loop.
After iptables support nft backend, it will emit the following warning if there are rules in the legacy iptables. "# Warning: iptables-legacy tables present, use iptables-legacy to see them". This cause the header skipping to fail in the following loop.