looking at inbound statsd traffic it looks like restbase should be batching metric packets inside a single udp datagram
```
13:36:29.588068 IP restbase1009.eqiad.wmnet.43120 > graphite1001.eqiad.wmnet.8125: UDP, length 40
13:36:29.588071 IP restbase1009.eqiad.wmnet.43120 > graphite1001.eqiad.wmnet.8125: UDP, length 40
13:36:29.588319 IP restbase1001.eqiad.wmnet.40168 > graphite1001.eqiad.wmnet.8125: UDP, length 40
13:36:29.588328 IP restbase1001.eqiad.wmnet.40168 > graphite1001.eqiad.wmnet.8125: UDP, length 40
13:36:29.588560 IP restbase1007.eqiad.wmnet.36536 > graphite1001.eqiad.wmnet.8125: UDP, length 57
13:36:29.588564 IP restbase1007.eqiad.wmnet.36536 > graphite1001.eqiad.wmnet.8125: UDP, length 57
13:36:29.588565 IP restbase1007.eqiad.wmnet.36536 > graphite1001.eqiad.wmnet.8125: UDP, length 41
13:36:29.588580 IP restbase1007.eqiad.wmnet.36536 > graphite1001.eqiad.wmnet.8125: UDP, length 41
13:36:29.589080 IP restbase1001.eqiad.wmnet.40168 > graphite1001.eqiad.wmnet.8125: UDP, length 40
13:36:29.589087 IP restbase1001.eqiad.wmnet.40168 > graphite1001.eqiad.wmnet.8125: UDP, length 40
13:36:29.589436 IP restbase1003.eqiad.wmnet.35900 > graphite1001.eqiad.wmnet.8125: UDP, length 40
13:36:29.589440 IP restbase1003.eqiad.wmnet.35900 > graphite1001.eqiad.wmnet.8125: UDP, length 40
13:36:29.589465 IP restbase1003.eqiad.wmnet.35900 > graphite1001.eqiad.wmnet.8125: UDP, length 41
13:36:29.589469 IP restbase1003.eqiad.wmnet.35900 > graphite1001.eqiad.wmnet.8125: UDP, length 41
13:36:29.589588 IP restbase1009.eqiad.wmnet.43120 > graphite1001.eqiad.wmnet.8125: UDP, length 41
13:36:29.589590 IP restbase1009.eqiad.wmnet.43120 > graphite1001.eqiad.wmnet.8125: UDP, length 41
13:36:29.590016 IP restbase1005.eqiad.wmnet.49875 > graphite1001.eqiad.wmnet.8125: UDP, length 41
13:36:29.590021 IP restbase1005.eqiad.wmnet.49875 > graphite1001.eqiad.wmnet.8125: UDP, length 41
```