## Trying with just the hostname
[root@test2 ~]# puppetd --server test1 --waitforcert 60 --test
info: Creating a new certificate request for test2.localdomain
info: Creating a new SSL key at /etc/puppet/ssl/private_keys/test2.localdomain.pem
err: Could not call puppetca.getcert: #<Errno::EHOSTUNREACH: No route to host - connect(2)>
err: Could not request certificate: Certificate retrieval failed: No route to host - connect(2)

## I do have a route to test1
[root@test2 ~]# ping test1
PING test1 (172.16.252.128) 56(84) bytes of data.
64 bytes from test1 (172.16.252.128): icmp_seq=1 ttl=64 time=0.284 ms
64 bytes from test1 (172.16.252.128): icmp_seq=2 ttl=64 time=0.456 ms
64 bytes from test1 (172.16.252.128): icmp_seq=3 ttl=64 time=0.432 ms
64 bytes from test1 (172.16.252.128): icmp_seq=4 ttl=64 time=0.672 ms

--- test1 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3000ms
rtt min/avg/max/mdev = 0.284/0.461/0.672/0.138 ms
[root@test2 ~]# hostname
test2

## trying with just ip
[root@test2 ~]# puppetd --server 172.16.252.128 --waitforcert 60 --test
err: Could not call puppetca.getcert: #<Errno::EHOSTUNREACH: No route to host - connect(2)>
err: Could not request certificate: Certificate retrieval failed: No route to host - connect(2)