title: Debian Buster - Cannot ping host from other machines except windows?
body: <p>I've got a Debian 10 system that just...doesn't seem to want to be reached. The system itself (named Hestia in my scenario) is a VM host (proxmox). It can ping every other system, including it's own guest VMs, and itself just fine:</p>
  <pre><code>root@Hestia:~# ping hestia
  PING Hestia (10.1.0.24) 56(84) bytes of data.
  64 bytes from Hestia (10.1.0.24): icmp_seq=1 ttl=64 time=0.022 ms
  64 bytes from Hestia (10.1.0.24): icmp_seq=2 ttl=64 time=0.030 ms
  64 bytes from Hestia (10.1.0.24): icmp_seq=3 ttl=64 time=0.031 ms
  </code></pre>
  <p>But no other linux system can reach it by hostname:</p>
  <pre><code>[root@Gitlab ~]# ping Hestia.lan
  ping: Hestia.lan: Name or service not known
  [root@Gitlab ~]# ping Hestia
  ping: Hestia: Name or service not known
  [root@Gitlab ~]# ping hestia
  ping: hestia: Name or service not known
  </code></pre>
  <p>What's curious about this is that I can reach the system fine from any windows system, but only getting a response via IPv6:</p>
  <pre><code>ping hestia
  
  Pinging Hestia.local [fe80::aaa1:59ff:fe49:cf27%22] with 32 bytes of data:
  Reply from fe80::aaa1:59ff:fe49:cf27%22: time&lt;1ms
  Reply from fe80::aaa1:59ff:fe49:cf27%22: time&lt;1ms
  </code></pre>
  <p>I'm really not quite sure where to even start looking here. What would cause this? And how do I fix it so that my linux machines can access my server by hostname?</p>
  <p>Here are my conf  files that I think are relevant?</p>
  <pre><code>root@Hestia:~# cat /etc/hosts
  127.0.0.1       localhost
  10.1.0.24       Hestia Hestia.proxmox.com
  #127.0.1.1      Hestia.lan Hestia
  
  # The following lines are desirable for IPv6 capable hosts
  ::1     localhost ip6-localhost ip6-loopback
  ff02::1 ip6-allnodes
  ff02::2 ip6-allrouters
  </code></pre>
  <p>.</p>
  <pre><code>root@Hestia:~# cat /etc/resolv.conf
  # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
  #     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
  nameserver 127.0.0.53
  nameserver 10.1.0.1
  search lan
  domain lan
  </code></pre>