1) chromeos2-row36-rack3-host3-servo
2) chromeos2-row36-rack4-host5-servo

The above hostnames has been changed to below:
1) chromeos2-row11-rack3-host3-servo
2) chromeos2-row11-rack4-host5-servo

jongkyuj@jongkyuj0:~$ ping chromeos2-row11-rack3-host3-servo
PING chromeos2-row11-rack3-host3-servo.cros.corp.google.com (100.115.244.115) 56(84) bytes of data.
64 bytes from 100.115.244.115: icmp_seq=1 ttl=59 time=0.660 ms
64 bytes from 100.115.244.115: icmp_seq=2 ttl=59 time=0.780 ms
64 bytes from 100.115.244.115: icmp_seq=3 ttl=59 time=0.642 ms
64 bytes from 100.115.244.115: icmp_seq=4 ttl=59 time=0.608 ms
^C
--- chromeos2-row11-rack3-host3-servo.cros.corp.google.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 2999ms
rtt min/avg/max/mdev = 0.608/0.672/0.780/0.069 ms
jongkyuj@jongkyuj0:~$ ping chromeos2-row11-rack4-host5-servo
ping: unknown host chromeos2-row11-rack4-host5-servo
jongkyuj@jongkyuj0:~$ ping chromeos2-row11-rack4-host5-servo
PING chromeos2-row11-rack4-host5-servo.cros.corp.google.com (100.115.244.123) 56(84) bytes of data.
64 bytes from 100.115.244.123: icmp_seq=1 ttl=59 time=0.821 ms
64 bytes from 100.115.244.123: icmp_seq=2 ttl=59 time=0.823 ms
64 bytes from 100.115.244.123: icmp_seq=3 ttl=59 time=0.683 ms
64 bytes from 100.115.244.123: icmp_seq=4 ttl=59 time=0.774 ms
64 bytes from 100.115.244.123: icmp_seq=5 ttl=59 time=0.693 ms

1) chromeos2-row11-rack3-host3-servo
2) chromeos2-row11-rack4-host5-servo

Able to ping both servo.