Ed Greshko wrote:
William Murray wrote:
Hello guys,
I have 5 machines in a home network, all running F9,
with named/bind providing local DNS.
A couple of weeks ago a problem appeared: ssh hangs for internal
connections. No doubt
I had misconfigured the thing years ago, as bind mystifies me, but an
update must have triggered it.
The problem is that reverse lookups hang forever; here is the end of
"ssh -vvv XXX"
debug1: Next authentication method: gssapi-with-mic
debug3: Trying to reverse map address 168.254.0.251.
Note the 'dot' at the end.
If I try nslookup 168.254.0.251 it works fine, but 168.254.0.251. does
not.
Just curious.... Why do you want to use "168.254.0.251." If you were
to use a trailing . on IP addresses outside of your maps you'd find they
wouldn't get resolved either.
$ host 64.236.24.12
12.24.236.64.in-addr.arpa domain name pointer www3.cnn.com.
$ host 64.236.24.12.
Host 64.236.24.12 not found: 3(NXDOMAIN)
$ host 64.236.24.12
12.24.236.64.in-addr.arpa domain name pointer www3.cnn.com.
So, just don't know what value adding the trailing . has for you or what
you are expecting.
Adding the trailing dot, for names, prevents the value of the 'search'
field in /etc/resolve.com from being used. So
host fubar.bazfaz.net
could resolve to fubar.bazfaz.net.your.domain, if your DNS has a
wildcard MX record (like *.your.domain) would return a pointer to the
mail server for any address in your domain. If you add a trailing dot
that doesn't happen.
The value on an IP reverse lookup is unknown to me, there may be none.
--
Bill Davidsen <davidsen@xxxxxxx>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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