Please send verbose output, i.e. "ssh -vvv ..." On Wed, 1 Mar 2017, Adrian Wilkins wrote: > Ok, so my situation : > > Connecting to internal machines via a bastion server in AWS. > > Because I'm raising and tearing down the infrastructure a lot at this stage > with Terraform, the IP addresses change. > > For the management subnet, I have a private DNS zone defined, and a public > zone with a record for the bastion server. > > What I wanted ; to just be able to define a config entry thus : > > --- > > Host graylog > Hostname graylog.management > ProxyCommand ssh -q -W %h:%p user@xxxxxxxxxxxxxxxxxxx > > --- > > This takes a long time (> 30s)to connect because the client is doing a DNS > lookup on the Hostname, which apparently has to fail before it attempts to > connect. > > Add this to your /etc/hosts ... > > --- > > 127.0.0.1 graylog.management > > --- > > ... and connection is swift. This seems like a rather grody workaround, > because one day I may have a VPN server inside this cloud and want DNS lookups > to work properly. > > Is there a way to suppress this DNS lookup happening locally, when using > ProxyCommand? > > Is this in the same set of things being discussed at > > http://marc.info/?l=openssh-unix-dev&m=139556798100796&w=2 > > and https://bugzilla.mindrot.org/show_bug.cgi?id=2218 > > ? > > I don't have CanonicalizeHostName on, so what's doing the lookup? > _______________________________________________ > openssh-unix-dev mailing list > openssh-unix-dev@xxxxxxxxxxx > https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev > _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev
