Error in .h2o.doSafeREST(h2oRestApiVersion = h2oRestApiVersion, urlSuffix = urlSuffix, : Unexpected CURL error: getaddrinfo() thread failed to start

Question

I am experiencing a persistent error while trying to use H2O's h2o.automl function. I am trying to repeatedly run this model. It seems to completely fail after 5 or 10 runs.

Error in .h2o.__checkConnectionHealth() : 
  H2O connection has been severed. Cannot connect to instance at http://localhost:54321/
getaddrinfo() thread failed to start

In addition: There were 13 warnings (use warnings() to see them)
Error in .h2o.doSafeREST(h2oRestApiVersion = h2oRestApiVersion, urlSuffix = urlSuffix,  : 
  Unexpected CURL error: getaddrinfo() thread failed to start

I have updated java in response to: https://h2o-release.s3.amazonaws.com/h2o/rel-wolpert/4/docs-website/h2o-docs/faq/r.html (even though I am using a linux virtual machine). I have added a h2o.removeall() and gc() in response to R h2o server CURL error, kind of repeatable I have not attempted any changes regarding memory because my cluster has 16+ GB and the highest reading I have seen is 1.6 GiB in RStudio.

H2O is running in R/Rstudio Server on an Ubuntu 20.04 virtual machine. Could the virtual box software be blocking something?

The details on my H2O cluster are below:

openjdk version "11.0.11" 2021-04-20
OpenJDK Runtime Environment (build 11.0.11+9-Ubuntu-0ubuntu2.20.04)
OpenJDK 64-Bit Server VM (build 11.0.11+9-Ubuntu-0ubuntu2.20.04, mixed mode, sharing)

Starting H2O JVM and connecting: ... Connection successful!

R is connected to the H2O cluster: 
    H2O cluster uptime:         1 seconds 896 milliseconds 
    H2O cluster timezone:       America/Chicago 
    H2O data parsing timezone:  UTC 
    H2O cluster version:        3.35.0.2 
    H2O cluster version age:    19 hours and 24 minutes  
    H2O cluster name:           H2O_started_from_R_jholderieath_glq667 
    H2O cluster total nodes:    1 
    H2O cluster total memory:   19.84 GB 
    H2O cluster total cores:    12 
    H2O cluster allowed cores:  12 
    H2O cluster healthy:        TRUE 
    H2O Connection ip:          localhost 
    H2O Connection port:        54321 
    H2O Connection proxy:       NA 
    H2O Internal Security:      FALSE 
    H2O API Extensions:         Amazon S3, XGBoost, Algos, AutoML, Core V3, TargetEncoder, Core V4 
    R Version:                  R version 4.1.1 (2021-08-10)