Simon Horman wrote:
> From: Julius Volz <julius.volz@xxxxxxxxx>
> IPVS: Add handling of incoming ICMPV6 messages
> Add handling of incoming ICMPv6 messages.
> This follows the handling of IPv4 ICMP messages.
> Amongst ther things this problem allows IPVS to behave sensibly
> when an ICMPV6_PKT_TOOBIG message is received:
> This message is received when a realserver sends a packet >PMTU to the
> client. The hop on this path with insufficient MTU will generate an
> ICMPv6 Packet Too Big message back to the VIP. The LVS server receives
> this message, but the call to the function handling this has been
> missing. Thus, IPVS fails to forward the message to the real server,
> which then does not adjust the path MTU. This patch adds the missing
> call to ip_vs_in_icmp_v6() in ip_vs_in() to handle this situation.
> Thanks to Rob Gallagher from HEAnet for reporting this issue and for
> testing this patch in production (with direct routing mode).
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