BIND 10 #1534: socket creator should set IPV6_USE_MIN_MTU for AF_INET6 UDP sockets

[BIND 10 Development]

#1534: socket creator should set IPV6_USE_MIN_MTU for AF_INET6 UDP sockets
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            Reporter:  jinmei        |                        Owner:
                Type:  defect        |                       Status:  new
            Priority:  critical      |                    Milestone:  Next-
           Component:  Boss of BIND  |  Sprint-Proposed
           Sensitive:  0             |                     Keywords:
         Sub-Project:  Core          |              Defect Severity:  N/A
Estimated Difficulty:  0             |  Feature Depending on Ticket:
         Total Hours:  0             |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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 Otherwise it will be possible that a large response (with EDNS0) gets
 lost due to exceeding a link MTU at some intermediate router.

 Explicitly disabling path MTU discovery for IPv4 may also be helpful
 (setting IP_DONTFRAG to 0).

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Ticket URL: <http://bind10.isc.org/ticket/1534>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development