Robot Framework: All subsequent tests fail after one test fails - ssh

Question

Once one of my robot test fail, all further tests fail, I can't seem to find out why this happens.
I just execute a simple nslookup on my device and check if the output contains the word 'Name:'
Example:
*** Settings ***
Library SSHLibrary
Suite Setup Open Connection And Log In
Suite Teardown Close All Connections
*** Variables ***
${HOST} localhost
${LOGIN} testUser
${PASSWORD} testUser
*** Keywords ***
Open Connection And Log In
Open Connection ${HOST}
Login ${LOGIN} ${PASSWORD}
*** Test Cases ***
resolve dns domain on google:
Write nslookup qsdf.ft 8.8.4.4
${output}= Read delay=0.5s
Should Contain ${output} Name:
resolve dns domain google.com:
Write nslookup google.com 8.8.4.4
${output}= Read delay=0.5s
Should Contain ${output} Name:
The first test should fail and the second should pass.
It seems like the first test is stil waiting for its output while the other tests continue
my output on both tests:
'' does not contain 'Name:'