Yes, there is a network issue with s15. I have successfully established an SSH connection through the .16 IP, but as you can see:
C
[honphie@s15]:<~>$ ping google.com
ping: cannot resolve google.com: Address family for hostname not supported
[honphie@s15]:<~>$ ping www.serv00.com
ping: cannot resolve www.serv00.com: Address family for hostname not supported