The last couple of days, I've been having problems with interactive ssh into 
login.tools.wmflabs.org.  Every so often (multiple times an hour, at least), my connection will hang for a few seconds.  Sometimes more like 10-15 seconds.  I connect from my home MacOS box on broadband using:

ssh -t -i ~/.ssh/id_rsa_wikimedia  roysmith@login.tools.wmflabs.org  tmux attach -t work

The load doesn't look unreasonable:

$ uptime
 18:26:34 up 35 days,  9:04, 39 users,  load average: 0.74, 1.93, 1.80

and ping times look fine:

$ ping -v login.tools.wmflabs.org
PING login.tools.wmflabs.org (185.15.56.48): 56 data bytes
64 bytes from 185.15.56.48: icmp_seq=0 ttl=51 time=24.233 ms
64 bytes from 185.15.56.48: icmp_seq=1 ttl=51 time=27.086 ms
64 bytes from 185.15.56.48: icmp_seq=2 ttl=51 time=22.121 ms
64 bytes from 185.15.56.48: icmp_seq=3 ttl=51 time=22.726 ms
64 bytes from 185.15.56.48: icmp_seq=4 ttl=51 time=24.497 ms
64 bytes from 185.15.56.48: icmp_seq=5 ttl=51 time=24.809 ms
64 bytes from 185.15.56.48: icmp_seq=6 ttl=51 time=23.913 ms
64 bytes from 185.15.56.48: icmp_seq=7 ttl=51 time=25.811 ms
64 bytes from 185.15.56.48: icmp_seq=8 ttl=51 time=25.266 ms
64 bytes from 185.15.56.48: icmp_seq=9 ttl=51 time=22.865 ms
64 bytes from 185.15.56.48: icmp_seq=10 ttl=51 time=32.076 ms
64 bytes from 185.15.56.48: icmp_seq=11 ttl=51 time=26.069 ms
64 bytes from 185.15.56.48: icmp_seq=12 ttl=51 time=27.947 ms
64 bytes from 185.15.56.48: icmp_seq=13 ttl=51 time=27.088 ms
^C
--- login.tools.wmflabs.org ping statistics ---
14 packets transmitted, 14 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 22.121/25.465/32.076/2.484 ms

I'm in New York City, and login.tools.wmflabs.org looks like it's in Virginia, so that's pretty close.

This seems to have started in the past few days.  Anybody else seeing problems?