- Finally read the ssh_config man page about which value is used,

changed config accordingly.

.ssh/config.d/15_ec2

-# Disable SSH host key checking for EC2 instances.
-
-Host  *.compute-1.amazonaws.com
-UserKnownHostsFile /dev/null
-StrictHostKeyChecking no

.ssh/config.d/20_bullguard

@@ -6,11 +6,9 @@ User git
 IdentityFile ~/.ssh/bullguard_ecdsa
 
 Host 172.50.1.11
-IdentityFile ~/.ssh/bullguard-prod_rsa
 User ec2-user
 
 Host 172.50.1.111
-IdentityFile ~/.ssh/bullguard-prod_rsa
 User ec2-user
 
 Host 172.50.*.*

.ssh/config.d/20_shore

 # shore.co.il infrastructure
 
 Host ns1.shore.co.il www.shore.co.il
-HostName ns1.shore.co.il
 LocalForward 9091 xbmc.shore.co.il:9091
 DynamicForward 8080
-User nimrod
-IdentityFile ~/.ssh/shore_ecdsa
-IdentityFile ~/.ssh/shore_rsa
 
 Host xbmc.shore.co.il
-HostName xbmc.shore.co.il
-User nimrod
 ForwardX11 yes
-IdentityFile ~/.ssh/shore_ecdsa
-IdentityFile ~/.ssh/shore_rsa
 ProxyCommand ssh ns1.shore.co.il -W %h:%p
 
 Host ns2.shore.co.il
-HostName ns2.shore.co.il
 User admin
 DynamicForward 9999
-IdentityFile ~/.ssh/shore_ecdsa
-IdentityFile ~/.ssh/shore_rsa
 
 Host cgit.shore.co.il
-HostName cgit.shore.co.il
 ProxyCommand ssh ns1.shore.co.il -W %h:%p
-User nimrod
-IdentityFile ~/.ssh/shore_ecdsa
-IdentityFile ~/.ssh/shore_rsa
 
 Host ns3.shore.co.il
-HostName ns3.shore.co.il
 User root
-IdentityFile ~/.ssh/shore_ecdsa
-IdentityFile ~/.ssh/shore_rsa
 DynamicForward 8081
 
 Host host01.shore.co.il
-HostName host01.shore.co.il
-User nimrod
 ProxyCommand ssh ns1.shore.co.il -W %h:%p
-IdentityFile ~/.ssh/shore_ecdsa
-IdentityFile ~/.ssh/shore_rsa
 
 Host wdr4300.shore.co.il
-HostName wdr4300.shore.co.il
 User root
 ProxyCommand ssh ns1.shore.co.il -W %h:%p
+LocalForward 8082 localhost:80
+
+Host *.shore.co.il
 IdentityFile ~/.ssh/shore_ecdsa
 IdentityFile ~/.ssh/shore_rsa
-LocalForward 8082 localhost:80
+User nimrod