linux-kernel - [PATCH v4 0/2] Drop IPV6 packets if IPv6 is disabled on boot

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Date:   Fri, 30 Aug 2019 15:13:52 -0300
From:   Leonardo Bras <leonardo@...ux.ibm.com>
To:     netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        bridge@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Leonardo Bras <leonardo@...ux.ibm.com>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Florian Westphal <fw@...len.de>,
        Roopa Prabhu <roopa@...ulusnetworks.com>,
        Nikolay Aleksandrov <nikolay@...ulusnetworks.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH v4 0/2] Drop IPV6 packets if IPv6 is disabled on boot

This patchset was prevously a single patch named:
- netfilter: nf_tables: fib: Drop IPV6 packets if IPv6 is disabled on boot

It fixes a bug where a host, with IPv6 disabled on boot, has to deal with
guest IPv6 packets, that comes from a bridge interface.
When these packets reach the host ip6tables they cause a kernel panic.

---
Changes from v3:
- Move drop logic from nft_fib6_eval{,_type} to nft_fib_netdev_eval
- Add another patch to drop ipv6 packets from bridge when ipv6 disabled  

Changes from v2:
- Replace veredict.code from NF_DROP to NFT_BREAK
- Updated commit message (s/package/packet)

Changes from v1:
- Move drop logic from nft_fib_inet_eval() to nft_fib6_eval{,_type}
so it can affect other usages of these functions.

Leonardo Bras (2):
  netfilter: Terminate rule eval if protocol=IPv6 and ipv6 module is
    disabled
  net: br_netfiler_hooks: Drops IPv6 packets if IPv6 module is not
    loaded

 net/bridge/br_netfilter_hooks.c | 2 ++
 net/netfilter/nft_fib_netdev.c  | 3 +++
 2 files changed, 5 insertions(+)

-- 
2.20.1