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Subject: Re: Increase in retry and timeout errors post 9.9.4 -> 9.11.4 upgrade
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Well BIND 9.11+ supports DNS COOKIE by default and there are some servers that
mishandle EDNS requests with a DNS COOKIE option present. Unknown EDNS options
are suppos
Well BIND 9.11+ supports DNS COOKIE by default and there are some servers that
mishandle EDNS requests with a DNS COOKIE option present. Unknown EDNS options
are supposed to be ignored, but there are servers/firewalls that just drop such
queries. Others return FORMERR, others return NXDOMAIN w
Hi,
I have three centos 7 servers running bind acting as internal resolvers. There
was an update released that upgrades them from 0:9.9.4-74.el7_6.2 to
32:9.11.4-16.P2.el7_8.2. On performing this upgrade to one of the servers there
has been a notable increase in retry and timeout errors as meas
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